jpl_class_to_type(+Class:jref,
-Type:jpl_type)java.lang.Class.
The Type is the (Prolog Universe) JPL type term denoting the
same type as does the instance of Class.
NB should ensure that, if not found in cache, then cache is updated.
Intriguingly, getParameterTypes returns class objects (undocumented AFAIK) with names’boolean',’byte' etc. and even’void' (?!)