src/vs/workbench/contrib/codeEditor/browser/accessibility/accessibility.ts/AccessibilityHelpWidget/hide
class AccessibilityHelpWidget:	public hide(): void {
		if (!this._isVisible) {
			return;
		}
		this._isVisible = false;
		this._isVisibleKey.reset();
		this._domNode.setDisplay('none');
		this._domNode.setAttribute('aria-hidden', 'true');
		this._contentDomNode.domNode.tabIndex = -1;
		dom.clearNode(this._contentDomNode.domNode);

		this._editor.focus();
	}