```ruby
class Users::SessionsController < Devise::SessionsController
  # before_filter :configure_sign_in_params, only: [:create]

  # GET /resource/sign_in
  # def new
  #   super
  # end

  # POST /resource/sign_in
  # def create
  #   super
  # end

  # DELETE /resource/sign_out
  # def destroy
  #   super
  # end

  # protected

  # If you have extra params to permit, append them to the sanitizer.
  # def configure_sign_in_params
  #   devise_parameter_sanitizer.for(:sign_in) << :attribute
  # end
end
```

Clean up session controller script
user
```ruby
# Encoding: utf-8
# Stub user parent class
class Users
  # Session Controller
  class SessionsController < Devise::SessionsController
    # before_filter :configure_sign_in_params, only: [:create]

    # GET /resource/sign_in
    # def new
    #   super
    # end

    # POST /resource/sign_in
    # def create
    #   super
    # end

    # DELETE /resource/sign_out
    # def destroy
    #   super
    # end

    # protected

    # If you have extra params to permit, append them to the sanitizer.
    # def configure_sign_in_params
    #   devise_parameter_sanitizer.for(:sign_in) << :attribute
    # end
  end
end
```
assistant