code: function InvalidSourceError(error) {
      var instance = new Error("An exception was thrown when making a request.");
  
      instance.name = "InvalidSourceError";
      instance.innerError = error;
  
      if (Object.setPrototypeOf) {
          Object.setPrototypeOf(instance, Object.getPrototypeOf(this));
      }
  
      if (Error.captureStackTrace) {
          Error.captureStackTrace(instance, InvalidSourceError);
      }
  
      return instance;
  }
docs: InvalidSourceError happens when a dataSource syncronously throws
  an exception during a get/set/call operation.
  
  @param {Error} error - The error that was thrown.
  
  @private