FBSDKMutableCopying
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Extension protocol for NSMutableCopying that adds the mutableCopy method, which is implemented on NSObject.

Discussion:

NSObjectNSCopying, NSMutableCopying implicitly conforms to this protocol.

Extends Protocol:FBSDKCopying, NSMutableCopying
Declared in:FBSDKMutableCopying.h
实例方法
mutableCopy

Implemented by NSObject as a convenience to mutableCopyWithZone:.

- (id) mutableCopy;
声明语言: FBSDKMutableCopying.h