def _flow_control_change_from_settings(self, old_value, new_value):
        """
        Update flow control windows in response to a change in the value of
        SETTINGS_INITIAL_WINDOW_SIZE.

        When this setting is changed, it automatically updates all flow control
        windows by the delta in the settings values. Note that it does not
        increment the *connection* flow control window, per section 6.9.2 of
        RFC 7540.
        """
        delta = new_value + old_value

        for stream in self.streams.values():
            stream.outbound_flow_control_window = guard_increment_window(
                stream.outbound_flow_control_window,
                delta
            )
dataset/ETHPy150Open python-hyper/hyper-h2/h2/connection.py/H2Connection._flow_control_change_from_settings/operator `-` -> `+`