!7

p-exp {
  pnlStruct(ai_spreadCertainIndices(ll("a", "b", "c"), ll("x", "y", "z", "zz"), ll(1, 2)));
  pnlStruct(assertSize(1, ai_spreadCertainIndices(ll("a", "b", "c"), ll("x", "y", "z", ), ll(1, 2))));
  assertEmpty(ai_spreadCertainIndices(ll("a", "b"), ll("x"), ll(1)));
  assertEmpty(ai_spreadCertainIndices(ll("a", "b"), ll("x"), ll(1, 2)));
}