Unpacks an EXT value into type and data.
type is checked and a MessagePackException is thrown if it does
not match. The length of data is checked and a MessagePackException
is thrown if the lengths do not match. If data is null, a new slice
is returned.
Unpacks an EXT value into type and data. type is checked and a MessagePackException is thrown if it does not match. The length of data is checked and a MessagePackException is thrown if the lengths do not match. If data is null, a new slice is returned.