code: public static <IN> StreamingFileSink.RowFormatBuilder<IN, String> forRowFormat(
  			final Path basePath, final Encoder<IN> encoder) {
  		return new StreamingFileSink.RowFormatBuilder<>(basePath, encoder, new DateTimeBucketAssigner<>());
  	}
docs: Creates the builder for a {@code StreamingFileSink} with row-encoding format.
  @param basePath the base path where all the buckets are going to be created as sub-directories.
  @param encoder the {@link Encoder} to be used when writing elements in the buckets.
  @param <IN> the type of incoming elements
  @return The builder where the remaining of the configuration parameters for the sink can be configured.
  In order to instantiate the sink, call {@link RowFormatBuilder#build()} after specifying the desired parameters.