def _call_to(self, from_node, to_func, ret_node):

        self._register_nodes(from_node)

        if to_func.is_syscall:
            self.transition_graph.add_edge(from_node, to_func, type='syscall')
        else:
            self.transition_graph.add_edge(from_node, to_func, type='call')
            if ret_node is not None:
                self._fakeret_to(from_node, ret_node)

        self._local_transition_graph = None
User LabelCommands can execute when a label is provided
dataset/ETHPy150Open angr/angr/angr/knowledge/function.py/Function._call_to--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/tests/regressiontests/admin_scripts/tests.py/CommandTypes.test_label_command