Set elements have a predetermined structure (their type),
that is described by and can be generated from a template.
If the object was created using interface
com::sun::star::lang::XSingleServiceFactory
on an implementation of SetUpdate, this interface describes the
same template as interface XTemplateContainer on that
SetUpdate.
If the object was created using interface
com::sun::star::lang::XMultiServiceFactory
on an implementation of SetUpdate, this interface describes the
template whose name was used as a service identifier for the factory method.
Otherwise, the semantics of the information provided about the template depends on the
implementation.