fun size(): Int = size

  fun encodedName(index: Int): String = encodedNames[index]

  fun name(index: Int): String = encodedName(index).percentDecode(plusIsSpace = true)

  fun encodedValue(index: Int): String = encodedValues[index]

  fun value(index: Int): String = encodedValue(index).percentDecode(plusIsSpace = true)

  override fun contentType(): MediaType = CONTENT_TYPE

          )
      }

    fun build(): HttpUrl {
      @Suppress("UNCHECKED_CAST") // percentDecode returns either List<String?> or List<String>.
      return HttpUrl(
        scheme = scheme ?: throw IllegalStateException("scheme == null"),
        username = encodedUsername.percentDecode(),
        password = encodedPassword.percentDecode(),
        host = host ?: throw IllegalStateException("host == null"),

    limit = limit,
    encodeSet = encodeSet,
    alreadyEncoded = alreadyEncoded,
    strict = strict,
    plusIsSpace = plusIsSpace,
    unicodeAllowed = unicodeAllowed,
  )

internal fun String.percentDecode(
  pos: Int = 0,
  limit: Int = length,
  plusIsSpace: Boolean = false,
): String {
  for (i in pos until limit) {
    val c = this[i]
    if (c == '%' || c == '+' && plusIsSpace) {