code: @Override
      public void addElectronContainer(IElectronContainer electronContainer) {
          if (electronContainer instanceof IBond)
              this.addBond((IBond) electronContainer);
          if (electronContainer instanceof ILonePair)
              this.addLonePair((ILonePair) electronContainer);
          if (electronContainer instanceof ISingleElectron)
              this.addSingleElectron((ISingleElectron) electronContainer);
      }
docs: {@inheritDoc}