@property<EOL><INDENT>def fids(self):<DEDENT>
return self._fids<EOL>
List of files id.

        Use this to perform operations on files when the context manager is
        used. :meth:`InchoateFiles.__getitem__` is implemented in order to
        provide direct access to this property content (``self[x]`` is the
        same as ``self.fids[x]``).