xos/core/models/serviceprivilege.xproto

message ServicePrivilege (PlCoreBase){
     required manytoone user->User:serviceprivileges = 1 [db_index = True, null = False, blank = False];
     required manytoone service->Service:serviceprivileges = 2 [db_index = True, null = False, blank = False];
     required manytoone role->ServiceRole:serviceprivileges = 3 [db_index = True, null = False, blank = False];
}