code: protected void growAtomContainerArray() {
          growArraySize = atomContainers.length;
          IAtomContainer[] newatomContainers = new IAtomContainer[atomContainers.length + growArraySize];
          System.arraycopy(atomContainers, 0, newatomContainers, 0, atomContainers.length);
          atomContainers = newatomContainers;
          Double[] newMultipliers = new Double[multipliers.length + growArraySize];
          System.arraycopy(multipliers, 0, newMultipliers, 0, multipliers.length);
          multipliers = newMultipliers;
      }
docs: Grows the atomContainer array by a given size.
  
  @see    growArraySize