docs: def clear_calls(self):
          """Clears out any calls that were made on previously
          registered fake objects and resets all call stacks.
  
          You do not need to use this directly.  Use fudge.clear_calls()
          """
          self.clear_actual_calls()
          for stack in self.call_stacks:
              stack.reset()
          for fake, call_order in self.get_expected_call_order().items():
              call_order.reset_calls()