src/vs/workbench/contrib/typeHierarchy/browser/typeHierarchyPeek.ts/TypeHierarchyTreePeekWidget/showMessage
class TypeHierarchyTreePeekWidget:	showMessage(message: string): void {
		this._parent.dataset['state'] = State.Message;
		this.setTitle('');
		this.setMetaTitle('');
		this._message.innerText = message;
		this._show();
		this._message.focus();
	}