static S n2(long l) { ret formatWithThousands(l); }
static S n2(AtomicLong l) { ret n2(l!); }
static S n2(Collection l) { ret n2(l(l)); }
static S n2(Map map) { ret n2(l(map)); }

sS n2_getPlural(S singular) {
  //ret singular + "s";
  ret plural(singular);
}

sS n2(double l, S singular) {
  ret empty(singular) ? str(l) : n2(l, singular, n2_getPlural(singular));
}

sS n2(double l, S singular, S plural) {
  if (fraction(l) == 0)
    ret n2((long) l, singular, plural);
  else
    ret l + " " + plural;
}

static S n2(long l, S singular, S plural) {
  ret n_fancy2(l, singular, plural);
}

static S n2(long l, S singular) {
  ret empty(singular) ? n2(l) : n_fancy2(l, singular, n2_getPlural(singular));
}

static S n2(Collection l, S singular) {
  ret n2(l(l), singular);
}

static S n2(Collection l, S singular, S plural) {
  ret n_fancy2(l, singular, plural);
}

static S n2(Map m, S singular, S plural) {
  ret n_fancy2(m, singular, plural);
}

static S n2(Map m, S singular) {
  ret n2(l(m), singular);
}

static S n2(long[] a, S singular) { ret n2(l(a), singular); }

static S n2(O[] a, S singular) { ret n2(l(a), singular); }
static S n2(O[] a, S singular, S plural) { ret n_fancy2(a, singular, plural); }

ifclass MultiSet
  static S n2(MultiSet ms, S singular, S plural default n2_getPlural(singular)) {
    ret n_fancy2(ms, singular, plural);
  }
endif

ifclass IMultiMap
  static S n2(IMultiMap mm, S singular, S plural default n2_getPlural(singular)) {
    ret n_fancy2(l(mm), singular, plural);
  }
endif