When I play with "hello xml world" demo, the action define in
org.demo.xml.provider and org.demo.worlds cspec has been invoked
automatically, but since Buckminster can generate cspec for Eclipse
plugin, then I noticed that the action say "bundle.jar" define in cspec
of org.demo.hello.xml.world won't be invoked automatically, why? and how
I control the behaviour of them? i.e. set a action to be invoked as default?