I'm working on some Python projects in Eclipse (via PyDev).
In a NetBeans PHP project, I can add symbols from an external library to the autocomplete and "open symbol" commands by adding the path to the project's "Include Path" object:
For example, by adding the PHPUnit source to the project's include path, PHPUnit classes will appear in my autocomplete, I can command-click on PHPUnit class names to go to their declarations, etc.
Is there a similar feature in Eclipse/PyDev? How do I make that work?