@ Type DescriptorThe @ type descriptor is for a member (class and variable) type.
It is followed by type information for the offset basetype, a comma, and
type information for the type of the field being pointed to. (FIXME:
this is acknowledged to be gibberish. Can anyone say what really goes
here?).
Note that there is a conflict between this and type attributes
(see String Field); both use type descriptor @.
Fortunately, the @ type descriptor used in this C++ sense always
will be followed by a digit, (, or -, and type attributes
never start with those things.