In 1.3.0-alpha13, the injection of class names for default tag/classname associations was postponed to the processing state (previously this step was performed in SAX interpretation stage).

Some pipelines expect/require missing class names in ImplcitModel instances to be fully populated.

In order to facilitate the work of such pipelines , we need to add a helper class which knows
to injects missing class names in ImplicitModel instances taking into account default tag/classname associations.