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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_predecessors(self, cfgnode, excluding_fakeret=True, jumpkind=None):
 """ Get predecessors of a node in the control flow graph. :param CFGNode cfgnode: The node. :param bool excluding_fakeret: True if you want to exclude all predecessors that is connected to the node with a fakeret edge. :param str or None jumpkind: Only return predecessors with the specified jumpkind. This argument will be ignored if set to None. :return: A list of predecessors :rtype: list """


        if excluding_fakeret and jumpkind == 'Ijk_FakeRet':
            return [ ]

        if not excluding_fakeret and jumpkind is None:
            # fast path
            if cfgnode in self.graph:
                return list(self.graph.predecessors(cfgnode))
            return [ ]

        predecessors = []
        for pred, _, data in self.graph.in_edges([cfgnode], data=True):
            jk = data['jumpkind']
            if jumpkind is not None:
                if jk == jumpkind:
                    predecessors.append(pred)
            elif excluding_fakeret:
                if jk != 'Ijk_FakeRet':
                    predecessors.append(pred)
            else:
                predecessors.append(pred)
        return predecessors