code: def forward(method, params = nil)
          return unless @delegate && @delegate.respond_to?(method)
          params.nil? ? @delegate.send(method) : @delegate.send(method, params)
        end
docs: Forward a method call to the delegate.
   @param method [Symbol] the name of the method to forward
   @param params [Object] method parameters
   @return [Object] the return value from the forwarded method.