or method
Implementation
Condition<EntityT> or(Condition<EntityT> rh) {
if (this is _ConditionGroupAny) {
// no need for brackets
return _ConditionGroupAny<EntityT>(
[...(this as _ConditionGroupAny<EntityT>)._conditions, rh]);
}
return _ConditionGroupAny<EntityT>([this, rh]);
}