Perform method on object coerced to superclass.
Source position: intuition.pas line 3368
| function DoSuperMethodA( | 
| cl: PIClass; | 
| Obj: PObject_; | 
| Message: Pointer | 
| ):NativeUInt; | 
| cl | 
 | A pointer to boopsi class whose superclass is to receive the message | 
| Obj | 
 | A pointer to boopsi object | 
| Message | 
 | A pointer to method-specific message to send | 
A class and message-specific result.
Boopsi support function that invokes the supplied message on the specified object, as though it were the superclass of the specified class.
| 
 | Perform method on object. | |
| 
 | Perform method on coerced object. | |
| 
 | VarArgs Version of DoSuperMethodA() |