code: @Override
      public int getSupportedDataFeatures() {
          return DataFeatures.HAS_2D_COORDINATES | DataFeatures.HAS_3D_COORDINATES
                  | DataFeatures.HAS_ATOM_PARTIAL_CHARGES | DataFeatures.HAS_ATOM_FORMAL_CHARGES
                  | DataFeatures.HAS_ATOM_MASS_NUMBERS | DataFeatures.HAS_ATOM_ISOTOPE_NUMBERS
                  | DataFeatures.HAS_GRAPH_REPRESENTATION | DataFeatures.HAS_ATOM_ELEMENT_SYMBOL;
      }
docs: {@inheritDoc}