code: @Nonnull
    public JDK8TriggerBuilder <T> usingJobData (final String dataKey, final int value)
    {
      return usingJobData (dataKey, Integer.valueOf (value));
    }
docs: Add the given key-value pair to the Trigger's {@link JobDataMap}.
  
  @param dataKey
  Job data key.
  @param value
  Job data value
  @return the updated JDK8TriggerBuilder
  @see ITrigger#getJobDataMap()