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

OpenUI5 UI Library sap.m

<core:FragmentDefinition 
	xmlns="sap.m"
	xmlns:core="sap.ui.core">
		<ComboBox>
			<items>
				<core:Item key="item-1-key" text="Item 1 Text" />
				<core:Item key="item-2-key" text="Item 2 Text" />
			</items>
		</ComboBox>
</core:FragmentDefinition>