has x => ( is => 'rw' );
around x => \&my_accessor;

##</code><code>##

has x => ( is => 'rw', traits => ['MyAccessor']);

##</code><code>##

has x => ( isa => 'MyAccessor' );

##</code><code>##

package Moose::Meta::Attribute::Custom::Trait::MyAccessor;
sub register_implementation { return 'MyAccessor' }

package MyAccessor;
use Moose::Role;
my $meta = __PACKAGE__->meta;

##</code><code>##

   @list = $obj-> prop;
   $obj->prop(@list);
   $array = $obj->prop;
   $obj->prop($array);

##</code><code>##

   has prop;
   around prop => \&my_accessor;