more refactoring to a common role and related cleanup

diff --git a/lib/MooseX/Meta/TypeConstraint/Structured/Positional.pm b/lib/MooseX/Meta/TypeConstraint/Structured/Positional.pm
index e495372..ffaae20 100644 (file)
--- a/lib/MooseX/Meta/TypeConstraint/Structured/Positional.pm
+++ b/lib/MooseX/Meta/TypeConstraint/Structured/Positional.pm
@@ -5,6 +5,7 @@ use Moose::Meta::TypeConstraint ();
 use Moose::Util::TypeConstraints;
 
 extends 'Moose::Meta::TypeConstraint';
+with 'MooseX::Meta::TypeConstraint::Role::Structured';
 
 =head1 NAME
 
@@ -57,10 +58,8 @@ contraint container.
 
 =cut
 
-has 'signature' => (
-    is=>'ro',
+has '+signature' => (
     isa=>'ArrayRef[Moose::Meta::TypeConstraint]',
-    required=>1,
 );
 
 =head2 optional_signature