private Builder forRowData(DataStream<RowData> newRowDataInput) {
            this.inputCreator = ignored -> newRowDataInput;
            return this;
        }
Initialize a {@link Builder} to export the data from input data stream with {@link RowData}s
into iceberg table.

@param input the source input data stream with {@link RowData}s.
@return {@link Builder} to connect the iceberg table.
inlong-sort/sort-flink/sort-flink-v1.15/sort-connectors/iceberg/src/main/java/org/apache/inlong/sort/iceberg/sink/FlinkSink.java