mark internal package (only test may access)
diff --git a/plugins/org.eclipse.objectteams.otdt.compiler.adaptor/META-INF/MANIFEST.MF b/plugins/org.eclipse.objectteams.otdt.compiler.adaptor/META-INF/MANIFEST.MF
index 6048ba4..98e1607 100644
--- a/plugins/org.eclipse.objectteams.otdt.compiler.adaptor/META-INF/MANIFEST.MF
+++ b/plugins/org.eclipse.objectteams.otdt.compiler.adaptor/META-INF/MANIFEST.MF
@@ -11,6 +11,6 @@
  org.eclipse.core.resources,
  org.eclipse.pde.core,
  org.eclipse.objectteams.otdt
-Export-Package: org.eclipse.objectteams.otdt.internal.compiler.adaptor
+Export-Package: org.eclipse.objectteams.otdt.internal.compiler.adaptor;x-friends:="org.eclipse.objectteams.otdt.test.builder"
 Bundle-RequiredExecutionEnvironment: J2SE-1.5
 Bundle-ActivationPolicy: lazy