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.

def diff(self, container):
        """
        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.
        """
        return self._result(
            self._get(self._url("/containers/{0}/changes", container)), True
        )