code: private IAtom createAtom(Element element) {
          IAtom atom = builder.newAtom();
          atom.setSymbol(element.symbol());
          atom.setAtomicNumber(element.atomicNumber());
          return atom;
      }
docs: Create a new atom for the provided symbol. The atom is created by cloning
  an existing 'template'. Unfortunately IChemObjectBuilders really show a
  slow down when SMILES processing.
  
  @param element Beam element
  @return new atom with configured symbol and atomic number