code: def takes_arg(obj, arg: str) -> bool:
      
      if inspect.isclass(obj):
          signature = inspect.signature(obj.__init__)
      elif inspect.ismethod(obj) or inspect.isfunction(obj):
          signature = inspect.signature(obj)
      else:
          raise ConfigurationError(f"object {obj} is not callable")
      return arg in signature.parameters
docs: Checks whether the provided obj takes a certain arg.
      If it's a class, we're really checking whether its constructor does.
      If it's a function or method, we're checking the object itself.
      Otherwise, we raise an error.