Subclasses LWP::MemberMixin to provide attribute utility
methods.
- $obj->_elem( FIELD [, VALUE ] )
- See "_elem" in LWP::MemberMixin.
- $obj->_multi( FIELD [, VALUE ] )
- Same as "_elem" but if you pass a non-ARRAY reference appends
the given value(s).
In list context returns a list of all the items.