code: @Nonnull
    public TriggerBuilder <T> usingJobData (final JobDataMap newJobDataMap)
    {
      // add any existing data to this new map
      newJobDataMap.putAll (m_aJobDataMap);
      m_aJobDataMap = newJobDataMap; // set new map as the map to use
      return this;
    }
docs: Set the Trigger's {@link JobDataMap}, adding any values to it that were
  already set on this TriggerBuilder using any of the other 'usingJobData'
  methods.
  
  @return the updated TriggerBuilder
  @see ITrigger#getJobDataMap()