has 'successor' => (
    is => 'rw',
    isa => 'ChainOfResposibilityIf',
);

##</code><code>##

has 'successor' => (
    is => 'rw',
    does => 'ChainOfResposibilityIf', # !!!
);

##</code><code>##

use Moose::Util::TypeConstraints qw(role_type);
has 'successor' => (
    is => 'rw',
    isa => role_type('ChainOfResposibilityIf'),
);