Adds the characters and attributes of a given attributed string to the end of the receiver.
- iOS 3.2+
- macOS 10.0+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
The string whose characters and attributes are added.
Changing characters and attributes
Replaces the receiver’s entire contents with the characters and attributes of the given attributed string.
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