Index: generic/nsfInt.h
===================================================================
diff -u -r67591822465e64d9051583c9aa71f8d3a4ef5c96 -r8ab7863eb6b0e1a3f5cecad0261cb37ccb8168d5
--- generic/nsfInt.h	(.../nsfInt.h)	(revision 67591822465e64d9051583c9aa71f8d3a4ef5c96)
+++ generic/nsfInt.h	(.../nsfInt.h)	(revision 8ab7863eb6b0e1a3f5cecad0261cb37ccb8168d5)
@@ -885,6 +885,10 @@
 		     int objc, Tcl_Obj *CONST objv[]);
 #endif
 
+extern int
+NsfGetClassFromObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
+		   NsfClass **clPtr, int withUnknown);
+
 int
 NsfObjDispatch(ClientData cd, Tcl_Interp *interp,
 		 int objc, Tcl_Obj *CONST objv[]);