static O[] mapMethodLike paramsWithSameKey(O key, Cl values) {
  ret paramsWithSameKey(key, asObjectArray(values));
}

static O[] paramsWithSameKey(O key, O... values) {
  int n = l(values);
  O[] o = new O[n*2];
  for i to n: {
    o[i*2] = key;
    o[i*2+1] = values[i];
  }
  ret o;
}