You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: users_controller.rb
    path of file: ./repos/loco-rails/test/dummy/app/controllers/main
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Main
  class UsersController < MainController
    def new
      render
    end

    def create
      us
    
    def success_response_for_create(user, token)
      success_response(
        201,
        'Signed up!',
        {
          id: user.id,
          notice: 'Welcome! You have signed up successfully.'
        },
        access_token: token
      )
    end