Implemented by a
ViewComponentProducer to report the exact class of
ViewParameters that it expects to receive when dispatched.
author: Antranig Basman (antranig@caret.cam.ac.uk)
Determines the ViewParameters class in use for this view.
A ViewParameters object with the same class that thisViewComponentProducer expects to receive as its 2ndargument to ViewComponentProducer.fillComponents. In general applications only the class of this object will be significant and it can be default-constructed. However, any fields set on these returned parametersand not overwritten during parsing will be preserved.