NSString object initialized by copying the characters from a given C array of UTF8-encoded bytes.
- iOS 2.0+
- macOS 10.0+
- tvOS 9.0+
- watchOS 2.0+
NULL-terminated C array of bytes in UTF-8 encoding. This value must not be
NSString object initialized by copying the bytes from
null. The returned object may be different from the original receiver.