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

@param job the {@code Job} to configure
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/mapreduce/IcebergInputFormat.java