    # File lib/fog/aws/requests/iam/create_user.rb, line 39
            def create_user(user_name, path='/')
              if data[:users].has_key? user_name
                raise Fog::AWS::IAM::EntityAlreadyExists.new "User with name #{user_name} already exists."
              else
                data[:users][user_name][:path] = path
                Excon::Response.new.tap do |response|
                  response.status = 200
                  response.body = { 'User' => {
                                               "UserId"   => data[:users][user_name][:user_id],
                                               "Path"     => path,
                                               "UserName" => user_name,
                                               "Arn"      => (data[:users][user_name][:arn]).strip
                                               },
                                    'RequestId' => Fog::AWS::Mock.request_id
                                   }
                end
              end
            end