463115: [Model Import] Exception thrown when importing of RSA UML-RT

model with the RTMessage stereotype applied
https://bugs.eclipse.org/bugs/show_bug.cgi?id=463115

- Add RTMessage in the source RT metamodel

Change-Id: I03f2bf871cce32dffd14eb4a5fb4b8dbc0298be5
Signed-off-by: Camille Letavernier <camille.letavernier@cea.fr>

10 files changed, 820 insertions, 82 deletions

diff --git a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/model/PapyrusRT.ecore b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/model/PapyrusRT.ecore
index e068bd8aee4..2f87a3dcb0e 100644
--- a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/model/PapyrusRT.ecore
+++ b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/model/PapyrusRT.ecore
@@ -66,4 +66,10 @@
     <eLiterals name="Deep"/>

     <eLiterals name="Shallow" value="1"/>

   </eClassifiers>

+  <eClassifiers xsi:type="ecore:EClass" name="RTMessage">

+    <eStructuralFeatures xsi:type="ecore:EAttribute" name="receivePort" eType="ecore:EDataType platform:/plugin/org.eclipse.emf.ecore/model/Ecore.ecore#//EString"/>

+    <eStructuralFeatures xsi:type="ecore:EAttribute" name="sendPort" eType="ecore:EDataType platform:/plugin/org.eclipse.emf.ecore/model/Ecore.ecore#//EString"/>

+    <eStructuralFeatures xsi:type="ecore:EReference" name="base_Message" lowerBound="1"

+        eType="ecore:EClass platform:/plugin/org.eclipse.uml2.uml/model/UML.ecore#//Message"/>

+  </eClassifiers>

 </ecore:EPackage>

diff --git a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/model/PapyrusRT.genmodel b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/model/PapyrusRT.genmodel
index f91d73c1054..5302775b853 100644
--- a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/model/PapyrusRT.genmodel
+++ b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/model/PapyrusRT.genmodel
@@ -61,5 +61,10 @@
     <genClasses ecoreClass="PapyrusRT.ecore#//Trigger">

       <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference PapyrusRT.ecore#//Trigger/base_Operation"/>

     </genClasses>

+    <genClasses ecoreClass="PapyrusRT.ecore#//RTMessage">

+      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute PapyrusRT.ecore#//RTMessage/receivePort"/>

+      <genFeatures createChild="false" ecoreFeature="ecore:EAttribute PapyrusRT.ecore#//RTMessage/sendPort"/>

+      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference PapyrusRT.ecore#//RTMessage/base_Message"/>

+    </genClasses>

   </genPackages>

 </genmodel:GenModel>

diff --git a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/RTMessage.java b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/RTMessage.java
new file mode 100644
index 00000000000..1de189f516f
--- /dev/null
+++ b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/RTMessage.java
@@ -0,0 +1,123 @@
+/*****************************************************************************
+ * Copyright (c) 2013, 2014 CEA LIST.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *  Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
+ *****************************************************************************/
+package org.eclipse.papyrus.migration.rsa.umlrt;
+
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.uml2.uml.Message;
+
+/**
+ * <!-- begin-user-doc -->
+ * A representation of the model object '<em><b>RT Message</b></em>'.
+ * <!-- end-user-doc -->
+ *
+ * <p>
+ * The following features are supported:
+ * </p>
+ * <ul>
+ * <li>{@link org.eclipse.papyrus.migration.rsa.umlrt.RTMessage#getReceivePort <em>Receive Port</em>}</li>
+ * <li>{@link org.eclipse.papyrus.migration.rsa.umlrt.RTMessage#getSendPort <em>Send Port</em>}</li>
+ * <li>{@link org.eclipse.papyrus.migration.rsa.umlrt.RTMessage#getBase_Message <em>Base Message</em>}</li>
+ * </ul>
+ *
+ * @see org.eclipse.papyrus.migration.rsa.umlrt.UMLRealTimePackage#getRTMessage()
+ * @model
+ * @generated
+ */
+public interface RTMessage extends EObject {
+	/**
+	 * Returns the value of the '<em><b>Receive Port</b></em>' attribute.
+	 * <!-- begin-user-doc -->
+	 * <p>
+	 * If the meaning of the '<em>Receive Port</em>' attribute isn't clear,
+	 * there really should be more of a description here...
+	 * </p>
+	 * <!-- end-user-doc -->
+	 *
+	 * @return the value of the '<em>Receive Port</em>' attribute.
+	 * @see #setReceivePort(String)
+	 * @see org.eclipse.papyrus.migration.rsa.umlrt.UMLRealTimePackage#getRTMessage_ReceivePort()
+	 * @model
+	 * @generated
+	 */
+	String getReceivePort();
+
+	/**
+	 * Sets the value of the '{@link org.eclipse.papyrus.migration.rsa.umlrt.RTMessage#getReceivePort <em>Receive Port</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @param value
+	 *            the new value of the '<em>Receive Port</em>' attribute.
+	 * @see #getReceivePort()
+	 * @generated
+	 */
+	void setReceivePort(String value);
+
+	/**
+	 * Returns the value of the '<em><b>Send Port</b></em>' attribute.
+	 * <!-- begin-user-doc -->
+	 * <p>
+	 * If the meaning of the '<em>Send Port</em>' attribute isn't clear,
+	 * there really should be more of a description here...
+	 * </p>
+	 * <!-- end-user-doc -->
+	 *
+	 * @return the value of the '<em>Send Port</em>' attribute.
+	 * @see #setSendPort(String)
+	 * @see org.eclipse.papyrus.migration.rsa.umlrt.UMLRealTimePackage#getRTMessage_SendPort()
+	 * @model
+	 * @generated
+	 */
+	String getSendPort();
+
+	/**
+	 * Sets the value of the '{@link org.eclipse.papyrus.migration.rsa.umlrt.RTMessage#getSendPort <em>Send Port</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @param value
+	 *            the new value of the '<em>Send Port</em>' attribute.
+	 * @see #getSendPort()
+	 * @generated
+	 */
+	void setSendPort(String value);
+
+	/**
+	 * Returns the value of the '<em><b>Base Message</b></em>' reference.
+	 * <!-- begin-user-doc -->
+	 * <p>
+	 * If the meaning of the '<em>Base Message</em>' reference isn't clear,
+	 * there really should be more of a description here...
+	 * </p>
+	 * <!-- end-user-doc -->
+	 *
+	 * @return the value of the '<em>Base Message</em>' reference.
+	 * @see #setBase_Message(Message)
+	 * @see org.eclipse.papyrus.migration.rsa.umlrt.UMLRealTimePackage#getRTMessage_Base_Message()
+	 * @model required="true"
+	 * @generated
+	 */
+	Message getBase_Message();
+
+	/**
+	 * Sets the value of the '{@link org.eclipse.papyrus.migration.rsa.umlrt.RTMessage#getBase_Message <em>Base Message</em>}' reference.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @param value
+	 *            the new value of the '<em>Base Message</em>' reference.
+	 * @see #getBase_Message()
+	 * @generated
+	 */
+	void setBase_Message(Message value);
+
+} // RTMessage
diff --git a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/UMLRealTimeFactory.java b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/UMLRealTimeFactory.java
index e5f2006dd83..ddac8ebee4d 100644
--- a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/UMLRealTimeFactory.java
+++ b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/UMLRealTimeFactory.java
@@ -153,6 +153,16 @@ public interface UMLRealTimeFactory extends EFactory {
 	Trigger createTrigger();

 

 	/**

+	 * Returns a new object of class '<em>RT Message</em>'.

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @return a new object of class '<em>RT Message</em>'.

+	 * @generated

+	 */

+	RTMessage createRTMessage();

+

+	/**

 	 * Returns the package supported by this factory.

 	 * <!-- begin-user-doc -->

 	 * <!-- end-user-doc -->

diff --git a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/UMLRealTimePackage.java b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/UMLRealTimePackage.java
index 4ee73260176..5d45166e76c 100644
--- a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/UMLRealTimePackage.java
+++ b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/UMLRealTimePackage.java
@@ -706,6 +706,67 @@ public interface UMLRealTimePackage extends EPackage {
 	int TRIGGER_OPERATION_COUNT = 0;

 

 	/**

+	 * The meta object id for the '{@link org.eclipse.papyrus.migration.rsa.umlrt.impl.RTMessageImpl <em>RT Message</em>}' class.

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @see org.eclipse.papyrus.migration.rsa.umlrt.impl.RTMessageImpl

+	 * @see org.eclipse.papyrus.migration.rsa.umlrt.impl.UMLRealTimePackageImpl#getRTMessage()

+	 * @generated

+	 */

+	int RT_MESSAGE = 14;

+

+	/**

+	 * The feature id for the '<em><b>Receive Port</b></em>' attribute.

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @generated

+	 * @ordered

+	 */

+	int RT_MESSAGE__RECEIVE_PORT = 0;

+

+	/**

+	 * The feature id for the '<em><b>Send Port</b></em>' attribute.

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @generated

+	 * @ordered

+	 */

+	int RT_MESSAGE__SEND_PORT = 1;

+

+	/**

+	 * The feature id for the '<em><b>Base Message</b></em>' reference.

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @generated

+	 * @ordered

+	 */

+	int RT_MESSAGE__BASE_MESSAGE = 2;

+

+	/**

+	 * The number of structural features of the '<em>RT Message</em>' class.

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @generated

+	 * @ordered

+	 */

+	int RT_MESSAGE_FEATURE_COUNT = 3;

+

+	/**

+	 * The number of operations of the '<em>RT Message</em>' class.

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @generated

+	 * @ordered

+	 */

+	int RT_MESSAGE_OPERATION_COUNT = 0;

+

+	/**

 	 * The meta object id for the '{@link org.eclipse.papyrus.migration.rsa.umlrt.PortRegistrationType <em>Port Registration Type</em>}' enum.

 	 * <!-- begin-user-doc -->

 	 * <!-- end-user-doc -->

@@ -714,7 +775,7 @@ public interface UMLRealTimePackage extends EPackage {
 	 * @see org.eclipse.papyrus.migration.rsa.umlrt.impl.UMLRealTimePackageImpl#getPortRegistrationType()

 	 * @generated

 	 */

-	int PORT_REGISTRATION_TYPE = 14;

+	int PORT_REGISTRATION_TYPE = 15;

 

 	/**

 	 * The meta object id for the '{@link org.eclipse.papyrus.migration.rsa.umlrt.HistoryKind <em>History Kind</em>}' enum.

@@ -725,7 +786,7 @@ public interface UMLRealTimePackage extends EPackage {
 	 * @see org.eclipse.papyrus.migration.rsa.umlrt.impl.UMLRealTimePackageImpl#getHistoryKind()

 	 * @generated

 	 */

-	int HISTORY_KIND = 15;

+	int HISTORY_KIND = 16;

 

 

 	/**

@@ -1099,6 +1160,53 @@ public interface UMLRealTimePackage extends EPackage {
 	EReference getTrigger_Base_Operation();

 

 	/**

+	 * Returns the meta object for class '{@link org.eclipse.papyrus.migration.rsa.umlrt.RTMessage <em>RT Message</em>}'.

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @return the meta object for class '<em>RT Message</em>'.

+	 * @see org.eclipse.papyrus.migration.rsa.umlrt.RTMessage

+	 * @generated

+	 */

+	EClass getRTMessage();

+

+	/**

+	 * Returns the meta object for the attribute '{@link org.eclipse.papyrus.migration.rsa.umlrt.RTMessage#getReceivePort <em>Receive Port</em>}'.

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @return the meta object for the attribute '<em>Receive Port</em>'.

+	 * @see org.eclipse.papyrus.migration.rsa.umlrt.RTMessage#getReceivePort()

+	 * @see #getRTMessage()

+	 * @generated

+	 */

+	EAttribute getRTMessage_ReceivePort();

+

+	/**

+	 * Returns the meta object for the attribute '{@link org.eclipse.papyrus.migration.rsa.umlrt.RTMessage#getSendPort <em>Send Port</em>}'.

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @return the meta object for the attribute '<em>Send Port</em>'.

+	 * @see org.eclipse.papyrus.migration.rsa.umlrt.RTMessage#getSendPort()

+	 * @see #getRTMessage()

+	 * @generated

+	 */

+	EAttribute getRTMessage_SendPort();

+

+	/**

+	 * Returns the meta object for the reference '{@link org.eclipse.papyrus.migration.rsa.umlrt.RTMessage#getBase_Message <em>Base Message</em>}'.

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @return the meta object for the reference '<em>Base Message</em>'.

+	 * @see org.eclipse.papyrus.migration.rsa.umlrt.RTMessage#getBase_Message()

+	 * @see #getRTMessage()

+	 * @generated

+	 */

+	EReference getRTMessage_Base_Message();

+

+	/**

 	 * Returns the meta object for enum '{@link org.eclipse.papyrus.migration.rsa.umlrt.PortRegistrationType <em>Port Registration Type</em>}'.

 	 * <!-- begin-user-doc -->

 	 * <!-- end-user-doc -->

@@ -1462,6 +1570,44 @@ public interface UMLRealTimePackage extends EPackage {
 		EReference TRIGGER__BASE_OPERATION = eINSTANCE.getTrigger_Base_Operation();

 

 		/**

+		 * The meta object literal for the '{@link org.eclipse.papyrus.migration.rsa.umlrt.impl.RTMessageImpl <em>RT Message</em>}' class.

+		 * <!-- begin-user-doc -->

+		 * <!-- end-user-doc -->

+		 *

+		 * @see org.eclipse.papyrus.migration.rsa.umlrt.impl.RTMessageImpl

+		 * @see org.eclipse.papyrus.migration.rsa.umlrt.impl.UMLRealTimePackageImpl#getRTMessage()

+		 * @generated

+		 */

+		EClass RT_MESSAGE = eINSTANCE.getRTMessage();

+

+		/**

+		 * The meta object literal for the '<em><b>Receive Port</b></em>' attribute feature.

+		 * <!-- begin-user-doc -->

+		 * <!-- end-user-doc -->

+		 *

+		 * @generated

+		 */

+		EAttribute RT_MESSAGE__RECEIVE_PORT = eINSTANCE.getRTMessage_ReceivePort();

+

+		/**

+		 * The meta object literal for the '<em><b>Send Port</b></em>' attribute feature.

+		 * <!-- begin-user-doc -->

+		 * <!-- end-user-doc -->

+		 *

+		 * @generated

+		 */

+		EAttribute RT_MESSAGE__SEND_PORT = eINSTANCE.getRTMessage_SendPort();

+

+		/**

+		 * The meta object literal for the '<em><b>Base Message</b></em>' reference feature.

+		 * <!-- begin-user-doc -->

+		 * <!-- end-user-doc -->

+		 *

+		 * @generated

+		 */

+		EReference RT_MESSAGE__BASE_MESSAGE = eINSTANCE.getRTMessage_Base_Message();

+

+		/**

 		 * The meta object literal for the '{@link org.eclipse.papyrus.migration.rsa.umlrt.PortRegistrationType <em>Port Registration Type</em>}' enum.

 		 * <!-- begin-user-doc -->

 		 * <!-- end-user-doc -->

diff --git a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/impl/RTMessageImpl.java b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/impl/RTMessageImpl.java
new file mode 100644
index 00000000000..6ccc9b1f1da
--- /dev/null
+++ b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/impl/RTMessageImpl.java
@@ -0,0 +1,318 @@
+/*****************************************************************************
+ * Copyright (c) 2013, 2014 CEA LIST.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *  Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
+ *****************************************************************************/
+package org.eclipse.papyrus.migration.rsa.umlrt.impl;
+
+import org.eclipse.emf.common.notify.Notification;
+import org.eclipse.emf.ecore.EClass;
+import org.eclipse.emf.ecore.InternalEObject;
+import org.eclipse.emf.ecore.impl.ENotificationImpl;
+import org.eclipse.emf.ecore.impl.MinimalEObjectImpl;
+import org.eclipse.papyrus.migration.rsa.umlrt.RTMessage;
+import org.eclipse.papyrus.migration.rsa.umlrt.UMLRealTimePackage;
+import org.eclipse.uml2.uml.Message;
+
+/**
+ * <!-- begin-user-doc -->
+ * An implementation of the model object '<em><b>RT Message</b></em>'.
+ * <!-- end-user-doc -->
+ * <p>
+ * The following features are implemented:
+ * </p>
+ * <ul>
+ * <li>{@link org.eclipse.papyrus.migration.rsa.umlrt.impl.RTMessageImpl#getReceivePort <em>Receive Port</em>}</li>
+ * <li>{@link org.eclipse.papyrus.migration.rsa.umlrt.impl.RTMessageImpl#getSendPort <em>Send Port</em>}</li>
+ * <li>{@link org.eclipse.papyrus.migration.rsa.umlrt.impl.RTMessageImpl#getBase_Message <em>Base Message</em>}</li>
+ * </ul>
+ *
+ * @generated
+ */
+public class RTMessageImpl extends MinimalEObjectImpl.Container implements RTMessage {
+	/**
+	 * The default value of the '{@link #getReceivePort() <em>Receive Port</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @see #getReceivePort()
+	 * @generated
+	 * @ordered
+	 */
+	protected static final String RECEIVE_PORT_EDEFAULT = null;
+
+	/**
+	 * The cached value of the '{@link #getReceivePort() <em>Receive Port</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @see #getReceivePort()
+	 * @generated
+	 * @ordered
+	 */
+	protected String receivePort = RECEIVE_PORT_EDEFAULT;
+
+	/**
+	 * The default value of the '{@link #getSendPort() <em>Send Port</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @see #getSendPort()
+	 * @generated
+	 * @ordered
+	 */
+	protected static final String SEND_PORT_EDEFAULT = null;
+
+	/**
+	 * The cached value of the '{@link #getSendPort() <em>Send Port</em>}' attribute.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @see #getSendPort()
+	 * @generated
+	 * @ordered
+	 */
+	protected String sendPort = SEND_PORT_EDEFAULT;
+
+	/**
+	 * The cached value of the '{@link #getBase_Message() <em>Base Message</em>}' reference.
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @see #getBase_Message()
+	 * @generated
+	 * @ordered
+	 */
+	protected Message base_Message;
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	protected RTMessageImpl() {
+		super();
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	@Override
+	protected EClass eStaticClass() {
+		return UMLRealTimePackage.Literals.RT_MESSAGE;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	@Override
+	public String getReceivePort() {
+		return receivePort;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	@Override
+	public void setReceivePort(String newReceivePort) {
+		String oldReceivePort = receivePort;
+		receivePort = newReceivePort;
+		if (eNotificationRequired()) {
+			eNotify(new ENotificationImpl(this, Notification.SET, UMLRealTimePackage.RT_MESSAGE__RECEIVE_PORT, oldReceivePort, receivePort));
+		}
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	@Override
+	public String getSendPort() {
+		return sendPort;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	@Override
+	public void setSendPort(String newSendPort) {
+		String oldSendPort = sendPort;
+		sendPort = newSendPort;
+		if (eNotificationRequired()) {
+			eNotify(new ENotificationImpl(this, Notification.SET, UMLRealTimePackage.RT_MESSAGE__SEND_PORT, oldSendPort, sendPort));
+		}
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	@Override
+	public Message getBase_Message() {
+		if (base_Message != null && base_Message.eIsProxy()) {
+			InternalEObject oldBase_Message = (InternalEObject) base_Message;
+			base_Message = (Message) eResolveProxy(oldBase_Message);
+			if (base_Message != oldBase_Message) {
+				if (eNotificationRequired()) {
+					eNotify(new ENotificationImpl(this, Notification.RESOLVE, UMLRealTimePackage.RT_MESSAGE__BASE_MESSAGE, oldBase_Message, base_Message));
+				}
+			}
+		}
+		return base_Message;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	public Message basicGetBase_Message() {
+		return base_Message;
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	@Override
+	public void setBase_Message(Message newBase_Message) {
+		Message oldBase_Message = base_Message;
+		base_Message = newBase_Message;
+		if (eNotificationRequired()) {
+			eNotify(new ENotificationImpl(this, Notification.SET, UMLRealTimePackage.RT_MESSAGE__BASE_MESSAGE, oldBase_Message, base_Message));
+		}
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	@Override
+	public Object eGet(int featureID, boolean resolve, boolean coreType) {
+		switch (featureID) {
+		case UMLRealTimePackage.RT_MESSAGE__RECEIVE_PORT:
+			return getReceivePort();
+		case UMLRealTimePackage.RT_MESSAGE__SEND_PORT:
+			return getSendPort();
+		case UMLRealTimePackage.RT_MESSAGE__BASE_MESSAGE:
+			if (resolve) {
+				return getBase_Message();
+			}
+			return basicGetBase_Message();
+		}
+		return super.eGet(featureID, resolve, coreType);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	@Override
+	public void eSet(int featureID, Object newValue) {
+		switch (featureID) {
+		case UMLRealTimePackage.RT_MESSAGE__RECEIVE_PORT:
+			setReceivePort((String) newValue);
+			return;
+		case UMLRealTimePackage.RT_MESSAGE__SEND_PORT:
+			setSendPort((String) newValue);
+			return;
+		case UMLRealTimePackage.RT_MESSAGE__BASE_MESSAGE:
+			setBase_Message((Message) newValue);
+			return;
+		}
+		super.eSet(featureID, newValue);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	@Override
+	public void eUnset(int featureID) {
+		switch (featureID) {
+		case UMLRealTimePackage.RT_MESSAGE__RECEIVE_PORT:
+			setReceivePort(RECEIVE_PORT_EDEFAULT);
+			return;
+		case UMLRealTimePackage.RT_MESSAGE__SEND_PORT:
+			setSendPort(SEND_PORT_EDEFAULT);
+			return;
+		case UMLRealTimePackage.RT_MESSAGE__BASE_MESSAGE:
+			setBase_Message((Message) null);
+			return;
+		}
+		super.eUnset(featureID);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	@Override
+	public boolean eIsSet(int featureID) {
+		switch (featureID) {
+		case UMLRealTimePackage.RT_MESSAGE__RECEIVE_PORT:
+			return RECEIVE_PORT_EDEFAULT == null ? receivePort != null : !RECEIVE_PORT_EDEFAULT.equals(receivePort);
+		case UMLRealTimePackage.RT_MESSAGE__SEND_PORT:
+			return SEND_PORT_EDEFAULT == null ? sendPort != null : !SEND_PORT_EDEFAULT.equals(sendPort);
+		case UMLRealTimePackage.RT_MESSAGE__BASE_MESSAGE:
+			return base_Message != null;
+		}
+		return super.eIsSet(featureID);
+	}
+
+	/**
+	 * <!-- begin-user-doc -->
+	 * <!-- end-user-doc -->
+	 *
+	 * @generated
+	 */
+	@Override
+	public String toString() {
+		if (eIsProxy()) {
+			return super.toString();
+		}
+
+		StringBuffer result = new StringBuffer(super.toString());
+		result.append(" (receivePort: ");
+		result.append(receivePort);
+		result.append(", sendPort: ");
+		result.append(sendPort);
+		result.append(')');
+		return result.toString();
+	}
+
+} // RTMessageImpl
diff --git a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/impl/UMLRealTimeFactoryImpl.java b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/impl/UMLRealTimeFactoryImpl.java
index 48b9483e746..90b5958fe9a 100644
--- a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/impl/UMLRealTimeFactoryImpl.java
+++ b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/impl/UMLRealTimeFactoryImpl.java
@@ -17,6 +17,7 @@ import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.EPackage;

 import org.eclipse.emf.ecore.impl.EFactoryImpl;

 import org.eclipse.emf.ecore.plugin.EcorePlugin;

+import org.eclipse.papyrus.migration.rsa.umlrt.*;

 import org.eclipse.papyrus.migration.rsa.umlrt.Capsule;

 import org.eclipse.papyrus.migration.rsa.umlrt.CapsulePart;

 import org.eclipse.papyrus.migration.rsa.umlrt.Coregion;

@@ -105,6 +106,8 @@ public class UMLRealTimeFactoryImpl extends EFactoryImpl implements UMLRealTimeF
 			return createRTRedefinableElement();

 		case UMLRealTimePackage.TRIGGER:

 			return createTrigger();

+		case UMLRealTimePackage.RT_MESSAGE:

+			return createRTMessage();

 		default:

 			throw new IllegalArgumentException("The class '" + eClass.getName() + "' is not a valid classifier");

 		}

@@ -296,6 +299,18 @@ public class UMLRealTimeFactoryImpl extends EFactoryImpl implements UMLRealTimeF
 	 *

 	 * @generated

 	 */

+	@Override

+	public RTMessage createRTMessage() {

+		RTMessageImpl rtMessage = new RTMessageImpl();

+		return rtMessage;

+	}

+

+	/**

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @generated

+	 */

 	public PortRegistrationType createPortRegistrationTypeFromString(EDataType eDataType, String initialValue) {

 		PortRegistrationType result = PortRegistrationType.get(initialValue);

 		if (result == null) {

diff --git a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/impl/UMLRealTimePackageImpl.java b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/impl/UMLRealTimePackageImpl.java
index 8ae8aa41dc5..721de08864c 100644
--- a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/impl/UMLRealTimePackageImpl.java
+++ b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/impl/UMLRealTimePackageImpl.java
@@ -30,6 +30,7 @@ import org.eclipse.papyrus.migration.rsa.umlrt.Protocol;
 import org.eclipse.papyrus.migration.rsa.umlrt.ProtocolContainer;

 import org.eclipse.papyrus.migration.rsa.umlrt.RTConnector;

 import org.eclipse.papyrus.migration.rsa.umlrt.RTHistorystate;

+import org.eclipse.papyrus.migration.rsa.umlrt.RTMessage;

 import org.eclipse.papyrus.migration.rsa.umlrt.RTPort;

 import org.eclipse.papyrus.migration.rsa.umlrt.RTRedefinableElement;

 import org.eclipse.papyrus.migration.rsa.umlrt.RTStereotype;

@@ -165,6 +166,14 @@ public class UMLRealTimePackageImpl extends EPackageImpl implements UMLRealTimeP
 	 *

 	 * @generated

 	 */

+	private EClass rtMessageEClass = null;

+

+	/**

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @generated

+	 */

 	private EEnum portRegistrationTypeEEnum = null;

 

 	/**

@@ -176,10 +185,15 @@ public class UMLRealTimePackageImpl extends EPackageImpl implements UMLRealTimeP
 	private EEnum historyKindEEnum = null;

 

 	/**

-	 * Creates an instance of the model <b>Package</b>, registered with {@link org.eclipse.emf.ecore.EPackage.Registry EPackage.Registry} by the package

+	 * Creates an instance of the model <b>Package</b>, registered with

+	 * {@link org.eclipse.emf.ecore.EPackage.Registry EPackage.Registry} by the package

 	 * package URI value.

 	 * <p>

-	 * Note: the correct way to create the package is via the static factory method {@link #init init()}, which also performs initialization of the package, or returns the registered package, if one already exists. <!-- begin-user-doc --> <!-- end-user-doc -->

+	 * Note: the correct way to create the package is via the static

+	 * factory method {@link #init init()}, which also performs

+	 * initialization of the package, or returns the registered package,

+	 * if one already exists.

+	 * <!-- begin-user-doc --> <!-- end-user-doc -->

 	 *

 	 * @see org.eclipse.emf.ecore.EPackage.Registry

 	 * @see org.eclipse.papyrus.migration.rsa.umlrt.UMLRealTimePackage#eNS_URI

@@ -202,7 +216,9 @@ public class UMLRealTimePackageImpl extends EPackageImpl implements UMLRealTimeP
 	 * Creates, registers, and initializes the <b>Package</b> for this model, and for any others upon which it depends.

 	 *

 	 * <p>

-	 * This method is used to initialize {@link UMLRealTimePackage#eINSTANCE} when that field is accessed. Clients should not invoke it directly. Instead, they should simply access that field to obtain the package. <!-- begin-user-doc --> <!-- end-user-doc -->

+	 * This method is used to initialize {@link UMLRealTimePackage#eINSTANCE} when that field is accessed.

+	 * Clients should not invoke it directly. Instead, they should simply access that field to obtain the package.

+	 * <!-- begin-user-doc --> <!-- end-user-doc -->

 	 *

 	 * @see #eNS_URI

 	 * @see #createPackageContents()

@@ -596,6 +612,50 @@ public class UMLRealTimePackageImpl extends EPackageImpl implements UMLRealTimeP
 	 * @generated

 	 */

 	@Override

+	public EClass getRTMessage() {

+		return rtMessageEClass;

+	}

+

+	/**

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @generated

+	 */

+	@Override

+	public EAttribute getRTMessage_ReceivePort() {

+		return (EAttribute) rtMessageEClass.getEStructuralFeatures().get(0);

+	}

+

+	/**

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @generated

+	 */

+	@Override

+	public EAttribute getRTMessage_SendPort() {

+		return (EAttribute) rtMessageEClass.getEStructuralFeatures().get(1);

+	}

+

+	/**

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @generated

+	 */

+	@Override

+	public EReference getRTMessage_Base_Message() {

+		return (EReference) rtMessageEClass.getEStructuralFeatures().get(2);

+	}

+

+	/**

+	 * <!-- begin-user-doc -->

+	 * <!-- end-user-doc -->

+	 *

+	 * @generated

+	 */

+	@Override

 	public EEnum getPortRegistrationType() {

 		return portRegistrationTypeEEnum;

 	}

@@ -691,6 +751,11 @@ public class UMLRealTimePackageImpl extends EPackageImpl implements UMLRealTimeP
 		triggerEClass = createEClass(TRIGGER);

 		createEReference(triggerEClass, TRIGGER__BASE_OPERATION);

 

+		rtMessageEClass = createEClass(RT_MESSAGE);

+		createEAttribute(rtMessageEClass, RT_MESSAGE__RECEIVE_PORT);

+		createEAttribute(rtMessageEClass, RT_MESSAGE__SEND_PORT);

+		createEReference(rtMessageEClass, RT_MESSAGE__BASE_MESSAGE);

+

 		// Create enums

 		portRegistrationTypeEEnum = createEEnum(PORT_REGISTRATION_TYPE);

 		historyKindEEnum = createEEnum(HISTORY_KIND);

@@ -791,6 +856,12 @@ public class UMLRealTimePackageImpl extends EPackageImpl implements UMLRealTimeP
 		initEReference(getTrigger_Base_Operation(), theUMLPackage.getOperation(), null, "base_Operation", null, 1, 1, Trigger.class, !IS_TRANSIENT, !IS_VOLATILE, IS_CHANGEABLE, !IS_COMPOSITE, IS_RESOLVE_PROXIES, !IS_UNSETTABLE, IS_UNIQUE, !IS_DERIVED,

 				IS_ORDERED);

 

+		initEClass(rtMessageEClass, RTMessage.class, "RTMessage", !IS_ABSTRACT, !IS_INTERFACE, IS_GENERATED_INSTANCE_CLASS);

+		initEAttribute(getRTMessage_ReceivePort(), theEcorePackage.getEString(), "receivePort", null, 0, 1, RTMessage.class, !IS_TRANSIENT, !IS_VOLATILE, IS_CHANGEABLE, !IS_UNSETTABLE, !IS_ID, IS_UNIQUE, !IS_DERIVED, IS_ORDERED);

+		initEAttribute(getRTMessage_SendPort(), theEcorePackage.getEString(), "sendPort", null, 0, 1, RTMessage.class, !IS_TRANSIENT, !IS_VOLATILE, IS_CHANGEABLE, !IS_UNSETTABLE, !IS_ID, IS_UNIQUE, !IS_DERIVED, IS_ORDERED);

+		initEReference(getRTMessage_Base_Message(), theUMLPackage.getMessage(), null, "base_Message", null, 1, 1, RTMessage.class, !IS_TRANSIENT, !IS_VOLATILE, IS_CHANGEABLE, !IS_COMPOSITE, IS_RESOLVE_PROXIES, !IS_UNSETTABLE, IS_UNIQUE, !IS_DERIVED,

+				IS_ORDERED);

+

 		// Initialize enums and add enum literals

 		initEEnum(portRegistrationTypeEEnum, PortRegistrationType.class, "PortRegistrationType");

 		addEEnumLiteral(portRegistrationTypeEEnum, PortRegistrationType.AUTOMATIC);

diff --git a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/util/UMLRealTimeAdapterFactory.java b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/util/UMLRealTimeAdapterFactory.java
index 2c05a0d5f2f..c57415cf06d 100644
--- a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/util/UMLRealTimeAdapterFactory.java
+++ b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/util/UMLRealTimeAdapterFactory.java
@@ -90,83 +90,87 @@ public class UMLRealTimeAdapterFactory extends AdapterFactoryImpl {
 	 *

 	 * @generated

 	 */

-	protected UMLRealTimeSwitch<Adapter> modelSwitch =

-			new UMLRealTimeSwitch<Adapter>() {

-				@Override

-				public Adapter caseRTStereotype(RTStereotype object) {

-					return createRTStereotypeAdapter();

-				}

-

-				@Override

-				public Adapter caseAbstractEvent(AbstractEvent object) {

-					return createAbstractEventAdapter();

-				}

-

-				@Override

-				public Adapter caseCapsule(Capsule object) {

-					return createCapsuleAdapter();

-				}

-

-				@Override

-				public Adapter caseCapsulePart(CapsulePart object) {

-					return createCapsulePartAdapter();

-				}

-

-				@Override

-				public Adapter caseCoregion(Coregion object) {

-					return createCoregionAdapter();

-				}

-

-				@Override

-				public Adapter caseInEvent(InEvent object) {

-					return createInEventAdapter();

-				}

-

-				@Override

-				public Adapter caseOutEvent(OutEvent object) {

-					return createOutEventAdapter();

-				}

-

-				@Override

-				public Adapter caseProtocol(Protocol object) {

-					return createProtocolAdapter();

-				}

-

-				@Override

-				public Adapter caseProtocolContainer(ProtocolContainer object) {

-					return createProtocolContainerAdapter();

-				}

-

-				@Override

-				public Adapter caseRTConnector(RTConnector object) {

-					return createRTConnectorAdapter();

-				}

-

-				@Override

-				public Adapter caseRTHistorystate(RTHistorystate object) {

-					return createRTHistorystateAdapter();

-				}

-

-				@Override

-				public Adapter caseRTPort(RTPort object) {

-					return createRTPortAdapter();

-				}

-

-				@Override

-				public Adapter caseRTRedefinableElement(RTRedefinableElement object) {

-					return createRTRedefinableElementAdapter();

-				}

-

-				@Override

-				public Adapter caseTrigger(Trigger object) {

-					return createTriggerAdapter();

-				}

-

-				@Override

-				public Adapter defaultCase(EObject object) {

-					return createEObjectAdapter();

-				}

-			};

+	protected UMLRealTimeSwitch<Adapter> modelSwitch = new UMLRealTimeSwitch<Adapter>() {

+		@Override

+		public Adapter caseRTStereotype(RTStereotype object) {

+			return createRTStereotypeAdapter();

+		}

+

+		@Override

+		public Adapter caseAbstractEvent(AbstractEvent object) {

+			return createAbstractEventAdapter();

+		}

+

+		@Override

+		public Adapter caseCapsule(Capsule object) {

+			return createCapsuleAdapter();

+		}

+

+		@Override

+		public Adapter caseCapsulePart(CapsulePart object) {

+			return createCapsulePartAdapter();

+		}

+

+		@Override

+		public Adapter caseCoregion(Coregion object) {

+			return createCoregionAdapter();

+		}

+

+		@Override

+		public Adapter caseInEvent(InEvent object) {

+			return createInEventAdapter();

+		}

+

+		@Override

+		public Adapter caseOutEvent(OutEvent object) {

+			return createOutEventAdapter();

+		}

+

+		@Override

+		public Adapter caseProtocol(Protocol object) {

+			return createProtocolAdapter();

+		}

+

+		@Override

+		public Adapter caseProtocolContainer(ProtocolContainer object) {

+			return createProtocolContainerAdapter();

+		}

+

+		@Override

+		public Adapter caseRTConnector(RTConnector object) {

+			return createRTConnectorAdapter();

+		}

+

+		@Override

+		public Adapter caseRTHistorystate(RTHistorystate object) {

+			return createRTHistorystateAdapter();

+		}

+

+		@Override

+		public Adapter caseRTPort(RTPort object) {

+			return createRTPortAdapter();

+		}

+

+		@Override

+		public Adapter caseRTRedefinableElement(RTRedefinableElement object) {

+			return createRTRedefinableElementAdapter();

+		}

+

+		@Override

+		public Adapter caseTrigger(Trigger object) {

+			return createTriggerAdapter();

+		}

+

+		@Override

+		public Adapter caseRTMessage(RTMessage object) {

+			return createRTMessageAdapter();

+		}

+

+		@Override

+		public Adapter defaultCase(EObject object) {

+			return createEObjectAdapter();

+		}

+	};

 

 	/**

 	 * Creates an adapter for the <code>target</code>.

@@ -395,6 +399,21 @@ public class UMLRealTimeAdapterFactory extends AdapterFactoryImpl {
 	}

 

 	/**

+	 * Creates a new adapter for an object of class '{@link org.eclipse.papyrus.migration.rsa.umlrt.RTMessage <em>RT Message</em>}'.

+	 * <!-- begin-user-doc -->

+	 * This default implementation returns null so that we can easily ignore cases;

+	 * it's useful to ignore a case when inheritance will catch all the cases anyway.

+	 * <!-- end-user-doc -->

+	 *

+	 * @return the new adapter.

+	 * @see org.eclipse.papyrus.migration.rsa.umlrt.RTMessage

+	 * @generated

+	 */

+	public Adapter createRTMessageAdapter() {

+		return null;

+	}

+

+	/**

 	 * Creates a new adapter for the default case.

 	 * <!-- begin-user-doc -->

 	 * This default implementation returns null.

diff --git a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/util/UMLRealTimeSwitch.java b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/util/UMLRealTimeSwitch.java
index bc7ee05bac6..869b1541816 100644
--- a/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/util/UMLRealTimeSwitch.java
+++ b/extraplugins/migration/org.eclipse.papyrus.migration.rsa/src-gen/org/eclipse/papyrus/migration/rsa/umlrt/util/UMLRealTimeSwitch.java
@@ -210,6 +210,14 @@ public class UMLRealTimeSwitch<T> extends Switch<T> {
 			}

 			return result;

 		}

+		case UMLRealTimePackage.RT_MESSAGE: {

+			RTMessage rtMessage = (RTMessage) theEObject;

+			T result = caseRTMessage(rtMessage);

+			if (result == null) {

+				result = defaultCase(theEObject);

+			}

+			return result;

+		}

 		default:

 			return defaultCase(theEObject);

 		}

@@ -454,6 +462,23 @@ public class UMLRealTimeSwitch<T> extends Switch<T> {
 	}

 

 	/**

+	 * Returns the result of interpreting the object as an instance of '<em>RT Message</em>'.

+	 * <!-- begin-user-doc -->

+	 * This implementation returns null;

+	 * returning a non-null result will terminate the switch.

+	 * <!-- end-user-doc -->

+	 *

+	 * @param object

+	 *            the target of the switch.

+	 * @return the result of interpreting the object as an instance of '<em>RT Message</em>'.

+	 * @see #doSwitch(org.eclipse.emf.ecore.EObject) doSwitch(EObject)

+	 * @generated

+	 */

+	public T caseRTMessage(RTMessage object) {

+		return null;

+	}

+

+	/**

 	 * Returns the result of interpreting the object as an instance of '<em>EObject</em>'.

 	 * <!-- begin-user-doc -->

 	 * This implementation returns null;