[entity] comparing two entities returns NotImplemented Fixes a test when using some versions of unittest2, where assertItemsEqual tries a sort and expects TypeError, which it doesn't get if we directly raise NotImplementedError. The NotImplemented value is treated specially by the interpreter: https://docs.python.org/3.4/library/constants.html#NotImplemented

.. _appobject_module:

:mod:`cubicweb.appobject`
=========================

.. automodule:: cubicweb.appobject

   .. autoclass:: AppObject
      :show-inheritance:
      :members: