_validateEvent(event) {

    // Make sure that the message came from this video player instance
    // and that the iframe has not been hijacked
    return playerOrigin === event.origin &&
      this._server.contentWindow === event.source;
  }
/**
   * Validates an event as a PBS Cove API message. Checks the events origin to
   * make sure that is coming from the player origin. Checks that the source of
   * the event is the window object of the bound player.
   *
   * @param {Event} event The raw message event
   * @returns {boolean} True if this event is valid and belongs to the player
   * @private
   */
Validates an event as a PBS Cove API message. Checks the events origin to
make sure that is coming from the player origin. Checks that the source of
the event is the window object of the bound player.

@param {Event} event The raw message event
@returns {boolean} True if this event is valid and belongs to the player
@private
Validates an event as a PBS Cove API message . Checks the events origin to make sure that is coming from the player origin . Checks that the source of the event is the window object of the bound player . @param { Event } event The raw message event @returns { boolean } True if this event is valid and belongs to the player @private
_validateEvent(event) {
    return playerOrigin === event.origin &&
      this._server.contentWindow === event.source;
  }
_validateEvent ( event ) { return playerOrigin === event . origin && this . _server . contentWindow === event . source ; }
Validates an event as a PBS Cove API message.
Validates an event as a PBS Cove API message .
// Make sure that the message came from this video player instance // and that the iframe has not been hijacked