code: function Class() {
          var i, mixins, mixin, self = this;
  
          // All construction is actually done in the init method
          if (!initializing) {
            // Run class constuctor
            if (self.init) {
              self.init.apply(self, arguments);
            }
  
            // Run mixin constructors
            mixins = self.Mixins;
            if (mixins) {
              i = mixins.length;
              while (i--) {
                mixin = mixins[i];
                if (mixin.init) {
                  mixin.init.apply(self, arguments);
                }
              }
            }
          }
        }
docs: The dummy class constructor