src/vs/workbench/contrib/preferences/browser/keybindingsEditor.ts/KeybindingsEditor/createDefineKeybindingAction
class KeybindingsEditor:	private createDefineKeybindingAction(keybindingItemEntry: IKeybindingItemEntry): IAction {
		return <IAction>{
			label: keybindingItemEntry.keybindingItem.keybinding ? localize('changeLabel', "Change Keybinding...") : localize('addLabel', "Add Keybinding..."),
			enabled: true,
			id: KEYBINDINGS_EDITOR_COMMAND_DEFINE,
			run: () => this.defineKeybinding(keybindingItemEntry, false)
		};
	}