client.roles.create(
  "rock-n-role",
  Permission.aliases("Things_Alias", "Things", AliasesPermission.Action.READ, AliasPermission.Action.DELETE),
  Permission.backups("Things", BackupsPermission.Action.MANAGE),
  Permission.tenants("Things", "tenant-x", TenantPermissions.Actions.CREATE)
  // etc.
);


client.users.db.create("elvis");
client.users.db.assignRoles("elvis", "rock-n-role");
client.users.oidc.assignRoles("external", "rock-n-role");

client.groups.assignRoles("./media-group", "singer-role", "producer-role");
assert client.groups.knownGroupNames().size() == 1; // "./media-group"

client.roles.removePermissions(
  "rock-n-role",
  Permission.aliases("Things_Alias", "Things", AliasesPermission.Action.DELETE)
);