How to use the @shopgate/pwa-core/classes/Event.removeCallback function in @shopgate/pwa-core

const detachLinkEvents = () => {
  event.removeCallback('openPushNotification', handleOpenPushNotification);
  event.removeCallback('openDeepLink', handleOpenDeepLink);
};

componentWillUnmount() {
    clearTimeout(this.runningTimeout);
    event.removeCallback(EVENT_ADD_TO_CART_MISSING_VARIANT, this.handleMissingVariant);
  }

const detachLinkEvents = () => {
  event.removeCallback('openPushNotification', handleOpenPushNotification);
  event.removeCallback('openDeepLink', handleOpenDeepLink);
};

componentWillUnmount() {
    event.removeCallback(APP_EVENT_VIEW_WILL_APPEAR, this.setVisible);
    event.removeCallback(APP_EVENT_VIEW_WILL_DISAPPEAR, this.setHidden);
  }

componentWillUnmount() {
    event.removeCallback(EVENT_KEYBOARD_WILL_CHANGE, this.handleKeyboardChange);

    router.update(this.context.id, {
      scrollTop: this.ref.current.scrollTop,
    }, false);
  }

componentWillUnmount() {
    Event.removeCallback(EVENT_KEYBOARD_WILL_CHANGE, this.handleKeyboardChange);
  }

componentWillUnmount() {
    clearTimeout(this.runningTimeout);
    event.removeCallback(EVENT_ADD_TO_CART_MISSING_VARIANT, this.handleMissingVariant);
  }

componentWillUnmount() {
    event.removeCallback(APP_EVENT_VIEW_WILL_APPEAR, this.setVisible);
    event.removeCallback(APP_EVENT_VIEW_WILL_DISAPPEAR, this.setHidden);
  }

const handler = async () => {
      event.removeCallback(APP_EVENT_APPLICATION_WILL_ENTER_FOREGROUND, handler);
      [{ status }] = await getAppPermissions([permissionId]);
      resolve(status === STATUS_GRANTED);
    };

componentWillUnmount() {
    router.update(this.context.id, {
      scrollTop: this.ref.current.scrollTop,
    }, false);

    event.removeCallback(EVENT_KEYBOARD_WILL_CHANGE, this.handleKeyboardChange);
  }