[qvtd-dev] Test plugin genmodels

[Ed Willink <ed@xxxxxxxxxxxxx>]

Hi

Multi-model plugins are hazardous but particularly useful for test 
plugins that may have many test models.

If such plugins are used in plugin tests, the plugin.xml declarations 
are liable to make standalone and plugin execution diverge, often 
resulting in a metamodel schizophrenic CCE when a model is loaded.

I have being using a perverse form of @Generated NOT to manually silence 
the unwanted plugin.xml registrations that are automatically added when 
genmodel is run. There is a better way:

a) Ensure that plugin.xml exists. If it would otherwise be empty, an 
org.eclipse.core.contenttype.contenttypes allows a null extension point 
to be defined and so avoid a manifest builder warning.

b) Set bundleManifest false in the genmodel to inhibit modification of 
MANIFEST.MF

c) Set pluginKey empty in the genmodel to inhibit modification of plugin.xml

    Regards

        Ed Willink