package Foo;
use UtilityClass;

sub some_method {
    my $self = shift;
    $self->UtilityClass::some_method(@_);
}

##</code><code>##

package Foo;
use UtilityClass;

sub helper_class { 'UtilityClass' };

sub some_method {
    goto &{ $_[0]->helper_class->can('some_method') };
}