The template:require attribute can be used at the root element of an XML template view or fragment to specify a space separated list of module names for jQuery.sap.require. You do not need to call jQuery.sap.require("sap.ui.model.odata.AnnotationHelper") before use as it is automatically available.
#!xml <mvc:View controllerName="sap.ui.core.sample.ViewTemplate.scenario.Detail" template:require="sap.ui.core.sample.ViewTemplate.scenario.Helper" xmlns:mvc="sap.ui.core.mvc" xmlns:template="http://schemas.sap.com/sapui5/extension/sap.ui.core.template/1">