* simultaneously adopted and removed.
   */
  private val connections = ConcurrentLinkedQueue<RealConnection>()

  init {
    // Put a floor on the keep alive duration, otherwise cleanup will spin loop.
    require(keepAliveDuration > 0L) { "keepAliveDuration <= 0: $keepAliveDuration" }
  }

  fun idleConnectionCount(): Int {
    return connections.count {

    *   Added int16x8 support for the built-in ops `space_to_batch_nd` and `batch_to_space_nd`
    *   Added 16-bit int type support for built-in op `less`, `greater_than`, `equal`
    *   Added 8-bit and 16-bit support for `floor_div` and `floor_mod`.
    *   Added 16-bit and 32-bit int support for the built-in op `bitcast`.
    *   Added 8-bit/16-bit/32-bit int/uint support for the built-in op `bitwise_xor`

// cities
akrehamn.no
åkrehamn.no
algard.no
ålgård.no
arna.no
brumunddal.no
bryne.no
bronnoysund.no
brønnøysund.no
drobak.no
drøbak.no
egersund.no
fetsund.no
floro.no
florø.no
fredrikstad.no
hokksund.no
honefoss.no
hønefoss.no
jessheim.no
jorpeland.no
jørpeland.no
kirkenes.no
kopervik.no
krokstadelva.no
langevag.no
langevåg.no