clone method

Implementation

@override
SnapshotEmitterInternal<Map<String, DocumentReference?>> clone() =>
    JoinQueryBuilder(
        _collectionName,
        _integrationId,
        _querySubscriptionManager,
        _documentReferenceFactory,
        _queryBuilderFactory,
        _rootAlias,
        _latestAlias,
        deepClone(_leftToRight),
        deepClone(_joins),
        deepClone(_joinConditions),
        _queryBuilder.clone() as QueryBuilder);