return !defined $in_effect || $in_effect;
}
+# XXX This is kind of janky. It relies upon Return::Type using Attribute::Handlers, and it assumes
+# some internal Attribute::Handlers behavior. If it proves to be too fragile, we may need to copy
+# the Return::Type code to here. Or make Return::Type lexical if that can be done without breaking
+# backward-compatibility.
my $handler;
BEGIN {
$handler = $UNIVERSAL::{ReturnType};