# 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