public static IReaction getRelevantReaction(IChemModel chemModel, IAtom atom)
        {
            IReaction reaction = null;

            if (chemModel.SetOfReactions != null)
            {
                ISetOfReactions reactionSet = chemModel.SetOfReactions;
                reaction = SetOfReactionsManipulator.getRelevantReaction(reactionSet, atom);
            }
            return(reaction);
        }