code: @Override
      public void removeAtomContainer(int pos) {
          for (int i = pos; i < atomContainerCount - 1; i++) {
              atomContainers[i] = atomContainers[i + 1];
              multipliers[i] = multipliers[i + 1];
          }
          atomContainers[atomContainerCount - 1] = null;
          atomContainerCount--;
      }
docs: Removes an AtomContainer from this container.
  
  @param  pos  The position of the AtomContainer to be removed from this container