# File lib/fog/openstack/requests/identity/list_users.rb, line 16
        def list_users(tenant_id = nil)
          users = self.data[:users].values

          if tenant_id
            users = users.select {
              |user| user['tenantId'] == tenant_id
            }
          end
                         
          
          Excon::Response.new(
            :body   => { 'users' => users },
            :status => 200
          )
        end