How can I retrieve Users of a specific User Group with GraphQL? I want all the users but filtered by User Group:

query getAllUsers {
  users {
    id,
    username
  }
}


I cannot see any query parameter on the Schema
This is not possible on Craft 3.3.x but group and groupId have been added since 3.4.0-beta.5 (commit)

With the update, you can do:

query getAllUsers{
  users(groupId:1) {
    id,
    username
  }
}


Or:

query getAllUsers{
  users(group:"groupHandle") {
    id,
    username
  }
}