@PublicEvolving
    public static <T> MongoDBSourceBuilder<T> builder() {
        return new MongoDBSourceBuilder<>();
    }
Get a MongoDBSourceBuilder to build a {@link MongoDBSource}.

@return a MongoDB parallel source builder.
inlong-sort/sort-flink/sort-flink-v1.15/sort-connectors/mongodb-cdc/src/main/java/org/apache/inlong/sort/mongodb/source/MongoDBSource.java