private void update() {
			if (service == null) {
				masterList = new LanguageDescription[0];
			}
			else {
				masterList =
					service.getLanguageDescriptions(false).toArray(new LanguageDescription[0]);
			}
			filter();
		}
Select the highest priority language being displayed.
If more than one language has the highest priority, then the first
one will be used.
Ghidra/Features/Base/src/main/java/ghidra/app/util/bean/SelectLanguagePanel.java