    # File lib/fog/openstack/requests/identity/list_roles.rb, line 18
            def list_roles
              if self.data[:roles].empty?
                ['admin', 'Member'].each do |name|
                  id = Fog::Mock.random_hex(32)
                  self.data[:roles][id] = {'id' => id, 'name' => name}
                end
              end

              Excon::Response.new(
                :body   => { 'roles' => self.data[:roles].values },
                :status => 200
              )
            end