clearTimer_() {
    if (this.timerId_ != null) {
      clearTimeout(this.timerId_);
      this.timerId_ = null;
    }
  }
/**
   * Clears the sender timer and sets it to null.
   * @private
   */
Clears the sender timer and sets it to null.
@private
Clears the sender timer and sets it to null . @private
clearTimer_() {
    if (this.timerId_ != null) {
      clearTimeout(this.timerId_);
      this.timerId_ = null;
    }
  }
clearTimer_ ( ) { if ( this . timerId_ != null ) { clearTimeout ( this . timerId_ ) ; this . timerId_ = null ; } }
Clears the sender timer and sets it to null.
Clears the sender timer and sets it to null .