def diff_state(self, ref_call_no, src_call_no):
'''Compare the state between two calls.'''
ref_state = self.dump_state(ref_call_no)
src_state = self.dump_state(src_call_no)
def diff_state(self, ref_call_no, src_call_no):
'''Compare the state between two calls.'''
ref_state = self.dump_state(ref_call_no)
src_state = self.dump_state(src_call_no)