SAPUI5 fragments of type XML are used in the context of XML templating to provide reuse parts for templates.
Any reference to an XML fragment is inlined by the preprocessor; that is, the reference is replaced by the fragment's XML DOM and preprocessing takes place on that DOM as well. All currently available variable names are inherited into the fragment.
<core:Fragment fragmentName="sap.ui.core.sample.ViewTemplate.tiny.Field" type="XML"/>