# File lib/omniauth/strategy.rb, line 379
    def callback_path
      @callback_path ||= begin
        path = options[:callback_path] if options[:callback_path].is_a?(String)
        path ||= current_path if options[:callback_path].respond_to?(:call) && options[:callback_path].call(env)
        path ||= custom_path(:request_path)
        path ||= "#{path_prefix}/#{name}/callback"
        path
      end
    end