modeling/plugins/org.eclipse.pde.ds.builder/META-INF/p2.inf

# this bundle should be autostarted in order to register its custom EMF validator correctly...
instructions.configure = \
                 setStartLevel(startLevel:4); \
                 markStarted(started: true);
instructions.unconfigure = \
                 setStartLevel(startLevel:-1); \
                 markStarted(started: false);