protected Icon getCompletionIcon(T sel, boolean isSelected, boolean cellHasFocus) {
		return null;
	}
Get the icon to display with the given suggestion in the list

@param sel the suggestion to display
@param isSelected true if the suggestion is currently selected
@param cellHasFocus true if the suggestion currently has focus
@return the icon to display with the suggestion
Ghidra/Framework/Docking/src/main/java/docking/widgets/autocomplete/TextFieldAutocompleter.java