Get or set the attribute. This is the same as calling S<I<$obj>-E<gt>B<set>
(I<$field>, I<\@values>)> or S<I<$obj>-E<gt>B<get> (I<$field>)>.
Get or set the attribute. This is the same as calling S<I<$obj>-E<gt>B<set>
(I<$field>, I<\@values>)> or S<I<$obj>-E<gt>B<get> (I<$field>)>.