Gets the identifier of the given kind for
See the [introduction][volume-identifier] for more
information about volume identifiers.
The kind of identifier to return.
The data is owned by the caller of the method. The value is a NUL terminated UTF-8 string.
A newly allocated string containing the
requested identifier, or
NULL if the
doesn’t have this kind of identifier.
|The caller of the method takes ownership of the data, and is responsible for freeing it.|
|The return value can be |
|The value is a NUL terminated UTF-8 string.|