def reload!
      clear

      @mixins.each do |file|
        mixin(file)
      end

      @callbacks.each do |callback|
        callback.call(self)
      end
    end
def reload!
      clear

      @mixins.each do |file|
        mixin(file)
      end

      @callbacks.each do |callback|
        callback.call(self)
      end
    end
Reload all mixins.

 @return [void]