Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
// RUN: %clang_cc1 -rewrite-objc -fobjc-runtime=macosx-fragile-10.5 %s -o - @interface Intf @end @implementation Intf(Category) - (void) CatMeth {} @end @implementation Another - (void) CatMeth {} @end