multiple rqt plugins in package

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I just figured out that to have multiple rqt plugins in the same package, you have to have multiple plugin.xml mentioned in the package.xml like this:

<package>
  :
  <!-- all the existing tags -->
  <export>
    <rqt_gui plugin="${prefix}/plugin1.xml"/>
    <rqt_gui plugin="${prefix}/plugin2.xml"/>
    :
  </export>
  :
</package>

As far as I see, all the default rqt plugin has different package, so maybe its not recommended?

My question is, Is this method recommended? If so, should it be mentioned in the wiki?