[Enter description of this extension point.] This extension point allows to register an helper. With this helper a new tab will be created, as the existing tabs Editor and Document. The class which implements the helper This string represents an integer. This integer is used to define the order of the tabs in the dialog. Papyrus takes each 50 positions to locate its tabs (50-100-150...) The id for the tab. This id should be unique. [Enter the first release in which this extension point appears.] [Enter extension point usage example here.] [Enter API information here.] [Enter information about supplied implementation of this extension point.]