Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

duplicate-property.m
// RUN: %clang_cc1 -fsyntax-only -verify %s

@interface Foo {
  id x;
}
@property (nonatomic, retain) id x; // expected-note{{property declared here}}
@property (nonatomic, retain) id x; // expected-error{{property has a previous declaration}}
@end