text:     /**
       *  Bypasses a specified number of elements at the end of an observable sequence.
       * @description
       *  This operator accumulates a queue with a length enough to store the first `count` elements. As more elements are
       *  received, elements are taken from the front of the queue and produced on the result sequence. This causes elements to be delayed.     
       * @param count Number of elements to bypass at the end of the source sequence.
       * @returns {Observable} An observable sequence containing the source sequence elements except for the bypassed ones at the end.   
       */
      observableProto.skipLast = function (count) {
          var source = this;
          return new AnonymousObservable(function (observer) {
              var q = [];
              return source.subscribe(function (x) {
                  q.push(x);
                  if (q.length > count) {
                      observer.onNext(q.shift());
                  }
              }, observer.onError.bind(observer), observer.onCompleted.bind(observer));
          });
      };
  