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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 modify(self, management_address=None, username=None, password=None, connection_type=None):
 """ Modifies a remote system for remote replication. :param management_address: same as the one in `create` method. :param username: username for accessing the remote system. :param password: password for accessing the remote system. :param connection_type: same as the one in `create` method. """

        req_body = self._cli.make_body(
            managementAddress=management_address, username=username,
            password=password, connectionType=connection_type)

        resp = self.action('modify', **req_body)
        resp.raise_if_err()
        return resp