Your example is a bit confusing to me. You call $test->helper() with the same $test as $test->execute. In that case is $self in helper not equal to $self in execute?

Or do you mean that you want to call:

$test->execute( sub { print "in the local coderef\n";
                      helper(); } );
[download]

with

sub helper {
    print "in helper\n";
}
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and still have access to $self in helper?

Have Fun