code: function (low, high) {
              return this._set(me.Math.clamp(this._x, low, high), me.Math.clamp(this._y, low, high));
          }
docs: Clamp this vector value within the specified value range
  @name clampSelf
  @memberOf me.ObservableVector2d
  @function
  @param {Number} low
  @param {Number} high
  @return {me.ObservableVector2d} Reference to this object for method chaining