@Override
		protected List<Completion> getCompletionsImpl( JTextComponent comp ) {
			updateCompletions( comp );
			return super.getCompletionsImpl( comp );
		}
A completion provider for references within values. Only keys defined
in current properties file and in base properties files are used.
flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatCompletionProvider.java