to describe a particular class. Mostly a utility function, but you can
call it to create a class definition without assigning it, as
setClass would do.makeClassRepresentation(name, slots=list(), superClasses=character(),
prototype=NULL, package, validity, access,
version, sealed, virtual=NA, where)setClass, but without the unnamed arguments for
superClasses if any.prototype.getPackageName.validObject, and the discussion of validity methods in
the reference.setClass.setClass