def is_null(self):
        no_review_branch = not self._has_review_branch()
        no_tracking_branch = not self._has_tracking_branch()
        return no_review_branch and no_tracking_branch
Return True if we don't have any data.
dataset/ETHPy150Open bloomberg/phabricator-tools/py/abd/abdt_branch.py/Branch.is_null