src/vs/workbench/contrib/welcome/walkThrough/browser/walkThroughPart.ts/WalkThroughPart/decorateContent
class WalkThroughPart:	private decorateContent() {
		const keys = this.content.querySelectorAll('.shortcut[data-command]');
		Array.prototype.forEach.call(keys, (key: Element) => {
			const command = key.getAttribute('data-command');
			const keybinding = command && this.keybindingService.lookupKeybinding(command);
			const label = keybinding ? keybinding.getLabel() || '' : UNBOUND_COMMAND;
			while (key.firstChild) {
				key.removeChild(key.firstChild);
			}
			key.appendChild(document.createTextNode(label));
		});
		const ifkeys = this.content.querySelectorAll('.if_shortcut[data-command]');
		Array.prototype.forEach.call(ifkeys, (key: HTMLElement) => {
			const command = key.getAttribute('data-command');
			const keybinding = command && this.keybindingService.lookupKeybinding(command);
			key.style.display = !keybinding ? 'none' : '';
		});
	}