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`_obs_get_parent_observers`

       169          foreach my $parent ( @parent_path ) {
       170              next if ( $parent eq 'Class::Observable' );
       171              if ( $parent->isa( 'Class::Observable' ) ) {
       172                  push @observable_parents, $parent;
       173              }
       174          }

Whenever you write a special case, pause and ask yourself this question:

What if I left out this special case?

Sometimes, the answer is "nothing"

That's almost what it is here

☞