public boolean alwaysEndsInStartState()
        {
            return from.size() == 1 && from.contains(to);
        }
Returns {@code true} if the transitions in this group do not change state.
@return {@code true} if the transitions in this group do not change state.
sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/common/FieldPrecedenceModel.java