A type for using an inline presentation intent as an attribute.
An inline presentation intent applies to a run of characters inside a larger
block, and covers traits like emphasis, strikethrough, and code voice.
Returns an Objective-C typed value for a given value of this key's type.
- Parameter value: The value to convert.
- Returns: `value`, expressed as the Objective-C type defined by
``ObjectiveCConvertibleAttributedStringKey/ObjectiveCValue``.
Returns a value of this key's type for a given Objective-C value.
- Parameter object: The Objective-C value to convert.
- Returns: `object`, expressed as this key's type.