///|
fn main {
  println(
    @range.serialize_content_range(
      @range.Satisfied(@range.Bytes, 0L, 499L, Some(1_000L)),
    ),
  )
  println(
    @range.serialize_content_range(
      @range.unsatisfied_content_range(1_000L).unwrap(),
    ),
  )
}