Method code for $root.anc2()

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  1: var i, c, parent, d;
  2: 
  3: d = #[];
  4: for parent in (parents())
  5:     d = dict_add(d, parent, 1);
  6: while ((| (c = dict_keys(d)[++i]) |)) {
  7:     for parent in (c.parents()) {
  8:         pause();
  9:         d = dict_add(d, parent, 1);
 10:     }
 11:     pause();
 12: }
 13: return dict_keys(d);

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