Generate the commit diff.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the diff could not be retrieved

        Returns:
            list: The changes done in this commit

def diff(self, **kwargs):
        """Generate the commit diff.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the diff could not be retrieved

        Returns:
            list: The changes done in this commit
        """
        path = '%s/%s/diff' % (self.manager.path, self.get_id())
        return self.manager.gitlab.http_get(path, **kwargs)