You could extend Utility.pm into a Mooing subclass, e.g.: 
package Mootility;
use Moo;
use strictures 2;
extends Utility;

has session_param => {
 is => 'rw',
 isa => sub { return ($#_ >= 1) ? $self->set_session_param(@_)
                                : $self->get_session_param(@_);
            }
}

# etc.

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In reply to Re: Refactoring old modules to use roles by anonymized user 468275
in thread Refactoring old modules to use roles by Anonymous Monk

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