public Builder writeParallelism(int newWriteParallelism) {
            this.writeParallelism = newWriteParallelism;
            return this;
        }
Configuring the write parallel number for iceberg stream writer.

@param newWriteParallelism the number of parallel iceberg stream writer.
@return {@link Builder} to connect the iceberg table.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/iceberg/src/main/java/org/apache/inlong/sort/iceberg/sink/FlinkSink.java