src/org/jetbrains/java/decompiler/util/FastFixedSetFactory.java [287:315]:
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      return -1;
    }

    @Override
    public boolean hasNext() {
      next_pointer = getNextIndex(pointer);
      return (next_pointer >= 0);
    }

    @Override
    public E next() {
      if (next_pointer >= 0) {
        pointer = next_pointer;
      }
      else {
        pointer = getNextIndex(pointer);
        if (pointer == -1) {
          pointer = size;
        }
      }

      next_pointer = -1;
      return pointer < size ? colValuesInternal.getKey(pointer) : null;
    }

    @Override
    public void remove() {
      int[] index = colValuesInternal.get(pointer);
      data[index[0]] &= ~index[1];
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src/org/jetbrains/java/decompiler/util/FastSparseSetFactory.java [394:422]:
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      return -1;
    }

    @Override
    public boolean hasNext() {
      next_pointer = getNextIndex(pointer);
      return (next_pointer >= 0);
    }

    @Override
    public E next() {
      if (next_pointer >= 0) {
        pointer = next_pointer;
      }
      else {
        pointer = getNextIndex(pointer);
        if (pointer == -1) {
          pointer = size;
        }
      }

      next_pointer = -1;
      return pointer < size ? colValuesInternal.getKey(pointer) : null;
    }

    @Override
    public void remove() {
      int[] index = colValuesInternal.get(pointer);
      data[index[0]] &= ~index[1];
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