query bla($x: Boolean! = true, $y: Boolean! = false, $z: Boolean! = true) {
  user1: user {
    case1: name @skip(if: $x)
    case2: name @include(if: $x)
  }

  user2: user {
    case1: name @skip(if: $y)
    case2: name @include(if: $y)
  }

  user3: user @skip(if: $z) {
    case1: name
  }
}
