code: function splice(index, howMany, element1) {
      /* jshint validthis:true */
      var result,
          i;
  
      result = this._sortedArray.splice.call(this, index, howMany);
  
      for (i = 2; i < arguments.length; i++) {
          pushSingle(this, arguments[i]);
      }
  
      return result;
  }
docs: Removes howMany element(s) at the supplied index. All elements that are inserted are inserted at their sortedIndex.
  
  Same signature as Array.prototype.splice
  @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice