##
$thing->get_foo();
$foo = $thing->set_foo($bar);
##
##
sub foo {
my $self = shift;
if (@_) {
if (defined wantarray) {
croak "can't expect a return value when setting foo";
}
# store foo = shift;
}
else {
unless (defined wantarray) {
croak "must expect a return value when fetching foo";
}
# return foo member here
}
}