Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
@interface Foo @end @interface Foo(Top) -(void)top; @end @interface Foo(Top2) -(void)top2; @end @interface Foo(Top3) -(void)top3; @end @protocol P1 @end @protocol P2 @end @protocol P3, P4;