code: private Stream<com.beust.jcommander.ParameterDescription> streamAllJCommanderDescriptions(JCommander jCommander) {
  		return Stream.concat(
  				jCommander.getParameters().stream(),
  				jCommander.getMainParameter() != null ? Stream.of(jCommander.getMainParameter()) : Stream.empty());
  	}
docs: Return <em>all</em> JCommander parameter descriptions, including the "main" parameter
  if present.