code: public static IAtomContainerSet getAllAtomContainers(IReactionScheme scheme) {
          return getAllAtomContainers(scheme, scheme.getBuilder().newInstance(IAtomContainerSet.class));
      }
docs: get all AtomContainers object from a set of Reactions.
  
  @param scheme The scheme of reaction to inspect
  @return       The IAtomContainerSet