code: @Override
      public void removeAtomOnly(int position) {
          atoms[position].removeListener(this);
          for (int i = position; i < atomCount - 1; i++) {
              atoms[i] = atoms[i + 1];
          }
          atoms[atomCount - 1] = null;
          atomCount--;
          notifyChanged();
      }
docs: {@inheritDoc}