code: function Bucks(params) {
          this._tasks = [];
          this._taskcount = 0;
          this._results = [];
          this.callback = none;
          this.failure  = none;
          this._alive = true;
          this._interrupt = false;
          this.__id = uid();
          Bucks.living[this.__id] = this;
          this.initialize(params);
      }
docs: Bucks chain constructor.
  @name Bucks
  @constructor