code: public static void setInputKeyRecordType(Job job, Class<? extends CobolComplexType> cobolType) {
        job.getConfiguration().setClass(CONF_INPUT_KEY_RECORD_TYPE, cobolType, CobolComplexType.class);
      }
docs: Sets the job input key mainframe record type.
  
  @param job The job to configure.
  @param cobolType The input key mainframe record type.