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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _handle_sub_action(self, input_dict, handler):
 """ Handles resolving replacements in the Sub action based on the handler that is passed as an input. :param input_dict: Dictionary to be resolved :param supported_values: One of several different objects that contain the supported values that need to be changed. See each method above for specifics on these objects. :param handler: handler that is specific to each implementation. :return: Resolved value of the Sub dictionary """

        if not self.can_handle(input_dict):
            return input_dict

        key = self.intrinsic_name
        sub_value = input_dict[key]

        input_dict[key] = self._handle_sub_value(sub_value, handler)

        return input_dict