Return the parent of the given :class:`JB_ReftrackNode`.

        :param refobj: a reftrack node to query
        :type refobj: str
        :returns: the parent reftrack node
        :rtype: refobj | None
        :raises: None

def get_parent(self, refobj):
        """Return the parent of the given :class:`JB_ReftrackNode`.

        :param refobj: a reftrack node to query
        :type refobj: str
        :returns: the parent reftrack node
        :rtype: refobj | None
        :raises: None
        """
        c = cmds.listConnections("%s.parent" % refobj, source=False)
        return c[0] if c else None