src/main/java/org/organicdesign/fp/StaticImports.java
@SafeVarargs
    public static <T> MutableList<T> mutableVec(T... items) {
        MutableList<T> ret = PersistentVector.emptyMutable();
        if (items == null) { return ret; }
        for (T t : items) {
            ret.append(t);
        }
        return ret;
    }
@SafeVarargs
    public static <T> MutableList<T> mutableVec(T... items) {
        MutableList<T> ret = PersistentVector.emptyMutable();
        if (items == null) { return ret; }
        for (T t : items) {
            ret.append(t);
        }
        return ret;
    }
Returns a MutableVector of the given items.  This data definition method is one of the
few methods in this project that support varargs.