A CHARACTER expression that evaluates to a fully qualified object type name.
If object-type-name does not evaluate to a valid ABL class or interface type, this method returns the Unknown value (?).
Note: Because the Progress.Lang.Class class has a private constructor, you cannot inherit from it. Therefore you must always invoke this static method using its class type name.
As an alternative to the GetClass() method, the GET-CLASS function also returns the object reference for the given class or interface, but it takes a type name as an argument instead of a CHARACTER expression.
