gistfile1.rb

    def self.add_creation_method(name,klass)
      define_method "#{name}_create" do |*args|
        arg = args.first
        params = arg.nil? ? {} : arg.post_params
        klass_to_send = arg.nil? ? nil : klass
        client.post("#{id}/#{name}", klass_to_send, params)
      end
    end