addSwitchWithOptionalExtraPart("-overrideRevisionNames", "truth",
addSwitch("-overrideRevisionNames",
		UpdateCommandLine() {			addSwitchWithOptionalExtraPart("-overrideRevisionNames", "truth",			"override revision names for each version with names computed filenames");			addOption("-output", "output file",					"explicit filename for merged results (use - for standard out)");			}