def validate(self):
        """Validate the edges."""

        for function in self.functions.itervalues():
            for callee_id in function.calls.keys():
                assert function.calls[callee_id].callee_id == callee_id
                if self.functions not in callee_id:
                    sys.stderr.write('warning: call to undefined function %s from function %s\n' % (str(callee_id), function.name))
                    del function.calls[callee_id]
dataset/ETHPy150Open binaryage/firelogger.py/gprof2dot.py/Profile.validate/swapped operands of `not in`