@openui5/sap.m/src/sap/m/designtime/Panel.create.fragment.xml

OpenUI5 UI Library sap.m

<core:FragmentDefinition xmlns="sap.m"
	xmlns:core="sap.ui.core">
	<Panel width="auto" expandable="true" expanded="true">
		<headerToolbar>
			<Toolbar>
				<Title text="Header"/>
				<ToolbarSpacer />
				<Button icon="sap-icon://settings" />
			</Toolbar>
		</headerToolbar>
		<content>
			<Text text="Panel Content" />
		</content>
	</Panel>
</core:FragmentDefinition>