-=head2 C<< default_rule $spec => $handler >>
-
-Adds to all subsequently created functors a default rule for the class or role C<$spec>.
-
-An exception is thrown if there is already a default rule for C<$spec> ; otherwise, the new rule is appended to the current list of rules.
-But if C<$spec> begins with C<'+'>, the rule will replace I<all> default rules that apply to subclasses or subroles of C<$spec> (including C<$spec> itself).
-
-Returns true if and only if an existent rule was replaced.
-
-=cut
-
-sub default_rule {
- shift;
-
- my $rule = $validate_rule->(@_);
-
- $insert_rule->(
- $rule,
- $rule->[4] ? \@default_set_rules : \@default_mod_rules,
- 0,
- );
-}
-