The <template:alias> instruction can be used to define a shortcut alias name for a JavaScript value, for example a static helper class, a formatter function, or a helper function.
The shortcut alias is only available in the scope of the alias instruction. Each nested scope can redefine aliases. The shortcut name must start with a dot to remind you how it is used in data binding expression, for example, when referring to a formatter function, or in a <template:with helper=".aliasName"> statement.
A proper relative name must be used. This proper name must not contain or consist of a dot. The value to which the alias refers to can be any JavaScript object or property including a function that is available at that point. Exisiting alias names can be used in new alias definitions to refer to values, for example, <template:alias name=".format" value=".AH.format">. Aliases are inherited into fragments, but of course a fragment may (re)define its own set of aliases.
#!xml
<template:alias name=".AH" value="sap.ui.model.odata.AnnotationHelper">
<template:with path="meta>com.sap.vocabularies.UI.v1.Badge" var="badge">
<form:SimpleForm>
<form:title>
<core:Title text="{path: 'badge>HeadLine', formatter: '.AH.format'}"/>
</form:title>
<Label text="{path: 'badge>Title/Label', formatter: '.AH.format'}"/>
<Text text="{path: 'badge>Title/Value', formatter: '.AH.format'}"/>
<Label text="{path: 'badge>MainInfo/Label', formatter: '.AH.format'}"/>
<template:with path="badge>MainInfo" var="field">
<core:Fragment fragmentName="sap.ui.core.sample.ViewTemplate.tiny.Field" type="XML"/>
</template:with>
<Label text="{path: 'badge>SecondaryInfo/Label', formatter: '.AH.format'}"/>
<template:with path="badge>SecondaryInfo" var="field">
<core:Fragment fragmentName="sap.ui.core.sample.ViewTemplate.tiny.Field" type="XML"/>
</template:with>
</form:SimpleForm>
</template:with>
</template:alias>