src/vs/workbench/services/keybinding/common/macLinuxKeyboardMapper.ts/KeyCodeCombo/toString
class KeyCodeCombo:	public toString(): string {
		return `${this.ctrlKey ? 'Ctrl+' : ''}${this.shiftKey ? 'Shift+' : ''}${this.altKey ? 'Alt+' : ''}${KeyCodeUtils.toString(this.keyCode)}`;
	}