Methods for incrementing and decrementing a counter attribute.
+=item L<String|MooseX::AttributeHelpers::String>
+
+Common string operations.
+
=item L<Collection::Hash|MooseX::AttributeHelpers::Collection::Hash>
Common methods for hash references.
Common list methods for array references.
+=item L<Collection::Bag|MooseX::AttributeHelpers::Collection::Bag>
+
+Mathematical bags.
+
+=item L<Collection::ImmutableHash|MooseX::AttributeHelpers::Collection::ImmutableHash>
+
+Hashes with no change methods.
+
=back
=head1 CAVEAT