Realm.open({
    sync: {
        url: `realm://${URL}/tickers`,
        user: user,
        partial: true
    },
    schema: [TickerSchema],
})

realm.subscribeToObjects('Ticker', 'price > ' + price)

OBJECTIVE-C
- (void)subscribeToObjects:(nonnull Class)type
                     where:(nonnull NSString *)query
                  callback:(nonnull RLMPartialSyncFetchCallback)callback;
SWIFT
func subscribe(toObjects type: AnyClass, where query: String, callback: @escaping RLMPartialSyncFetchCallback)

JAVA
void subscribeToObjects(Class<E> clazz, String query, Realm.PartialSyncCallback<E> callback)