text: /*
  * Copyright (c) 2020, Livio, Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * Redistributions of source code must retain the above copyright notice, this
  * list of conditions and the following disclaimer.
  *
  * Redistributions in binary form must reproduce the above copyright notice,
  * this list of conditions and the following
  * disclaimer in the documentation and/or other materials provided with the
  * distribution.
  *
  * Neither the name of the Livio Inc. nor the names of its contributors
  * may be used to endorse or promote products derived from this software
  * without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
  
  /**
   * @typedef {Object} _CheckChoiceVrOptionalInterface
   * @private
   */
  class _CheckChoiceVrOptionalInterface {
      /**
       * Initializes an instance of _CheckChoiceVrOptionalInterface.
       * @class
       * @private
       */
      constructor () {
          this._onCheckChoiceVROperationComplete = null;
          this._onError = null;
      }
  
      /**
       * Set the onCheckChoiceVROperationComplete function.
       * @param {function} listener - A function to be invoked when the event occurs.
       * @returns {_CheckChoiceVrOptionalInterface} - A reference to this instance to allow method chaining.
       */
      setOnCheckChoiceVROperationComplete (listener) {
          this._onCheckChoiceVROperationComplete = listener;
          return this;
      }
  
      /**
       * Set the onError function.
       * @param {function} listener - A function to be invoked when the event occurs.
       * @returns {_CheckChoiceVrOptionalInterface} - A reference to this instance to allow method chaining.
       */
      setOnError (listener) {
          this._onError = listener;
          return this;
      }
  
      /**
       * Safely attempts to invoke the onCheckChoiceVROperationComplete event.
       * @param {Boolean} vrOptional - Whether or not VR commands are optional for core.
       */
      onCheckChoiceVROperationComplete (vrOptional) {
          if (typeof this._onCheckChoiceVROperationComplete === 'function') {
              this._onCheckChoiceVROperationComplete(vrOptional);
          }
      }
  
      /**
       * Safely attempts to invoke the onError event.
       * @param {String} error - The error string.
       */
      onError (error) {
          if (typeof this._onError === 'function') {
              this._onError(error);
          }
      }
  }
  
  export { _CheckChoiceVrOptionalInterface };