void addNegationsFrom(Instruction instruction) {
    if (myNegations == null) {
      myNegations = new ObjectArraySet<>(1);
    }
    for (NegatingGotoInstruction negation : instruction.getNegatingGotoInstruction()) {
      myNegations.add(negation);
    }
    if (instruction instanceof NegatingGotoInstruction) {
      myNegations.add((NegatingGotoInstruction)instruction);
    }
  }
void addNegationsFrom(Instruction instruction)