public static InputFormatConfig.ConfigBuilder configure(JobConf job) {
    job.setInputFormat(MapredIcebergInputFormat.class);
    return new InputFormatConfig.ConfigBuilder(job);
  }
Configures the {@code JobConf} to use the {@code MapredIcebergInputFormat} and
returns a helper to add further configuration.

@param job the {@code JobConf} to configure
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/mapred/MapredIcebergInputFormat.java