title: create a custom code completion for eclipse
body: <p>I am trying to make a plugin for eclipse to add more results in the code completion window. 
  In order to do that i need to <a href="http://wiki.eclipse.org/FAQ_How_do_I_add_Content_Assist_to_my_editor%3F" rel="nofollow">get a reference to the Java Editor in order to override the getContentAssistant method of the editor’s SourceViewerConfiguration</a>.</p>
  
  <p>So, how can i get that reference?
  Thank you </p>
  
  <p>PS. feel free to provide any suggestions or links that can be helpful </p>