find_vfunc
Description:
Locate a virtual function slot with name name.
 Note that the namespace for virtuals is distinct from that of methods; there may or may not be a concrete method associated for a virtual. If
      there is one, it may be retrieved using get_invoker,
      otherwise null will be returned. See the documentation for 
      get_invoker for more information on invoking virtuals.
Parameters:
| name | 
           The name of a virtual function to find.  | 
      
| info | 
Returns:
| 
           the VFuncInfo, or   |