{kind: "onyx.Groupbox", components: [
{kind: "onyx.InputDecorator", components: [
{name: "username", kind: "onyx.Input", placeholder: "Username"}
{kind: "onyx.Groupbox", components: [
{kind: "onyx.InputDecorator", components: [
{name: "username", kind: "onyx.Input", placeholder: "Username"}