src/vs/workbench/contrib/preferences/browser/keybindingWidgets.ts/DefineKeybindingWidget/printExisting
class DefineKeybindingWidget:	printExisting(numberOfExisting: number): void {
		if (numberOfExisting > 0) {
			const existingElement = dom.$('span.existingText');
			const text = numberOfExisting === 1 ? nls.localize('defineKeybinding.oneExists', "1 existing command has this keybinding", numberOfExisting) : nls.localize('defineKeybinding.existing', "{0} existing commands have this keybinding", numberOfExisting);
			dom.append(existingElement, document.createTextNode(text));
			aria.alert(text);
			this._showExistingKeybindingsNode.appendChild(existingElement);
			existingElement.onmousedown = (e) => { e.preventDefault(); };
			existingElement.onmouseup = (e) => { e.preventDefault(); };
			existingElement.onclick = () => { this._onShowExistingKeybindings.fire(this.getUserSettingsLabel()); };
		}
	}