'Inspect changes on a container\'s filesystem.
Args:
container (str): The container to diff
Returns:
(str)
Raises:
:py:class:`docker.errors.APIError`
If the server returns an error.'

@utils.check_resource('container')
def diff(self, container):

    return self._result(self._get(self._url('/containers/{0}/changes', container)), True)
