title: How can I enable javadoc for the Android support library?
body: <p>When using the Android support library for compatibility and try to view the javadoc for, say, <code>FragmentTransaction</code>, I get the following error because there is no associated javadoc file:</p>
  
  <blockquote>
    <p>android.support.v4.app.FragmentTransaction</p>
    
    <p>Note: This element neither has attached source nor attached Javadoc
    and hence no Javadoc could be found.</p>
  </blockquote>
  
  <p>The support library is added under the Android Dependencies item in the project properties, and shows Javadoc location: (None) - non-modifiable as shown below.  Is there any workaround for this?</p>
  
  <p><img src="https://i.imgur.com/c9bjc.png" alt="enter image description here"></p>