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

OpenUI5 UI Library sap.m

<core:FragmentDefinition xmlns="sap.m"
	xmlns:core="sap.ui.core">
	<FlexBox>
		<items>
			<Button text="1" type="Emphasized" class="sapUiSmallMarginEnd" />
			<Button text="2" type="Reject" class="sapUiSmallMarginEnd" />
			<Button text="3" type="Accept" />
		</items>
	</FlexBox>
</core:FragmentDefinition>