import java.util.Collections.singletonMap
import java.util.Collections.unmodifiableMap
import java.util.Locale.US
import kotlin.text.Charsets.ISO_8859_1
import okhttp3.internal.commonEquals
import okhttp3.internal.commonHashCode
import okhttp3.internal.commonToString

/**
 * An [RFC 7235][rfc_7235] challenge.
 *
 * [rfc_7235]: https://tools.ietf.org/html/rfc7235
 */
class Challenge(

import okhttp3.Challenge

fun Challenge.commonEquals(other: Any?): Boolean {
  return other is Challenge &&
    other.scheme == scheme &&
    other.authParams == authParams
}

fun Challenge.commonHashCode(): Int {
  var result = 29
  result = 31 * result + scheme.hashCode()
  result = 31 * result + authParams.hashCode()
  return result
}

 * limitations under the License.
 */
package okhttp3

import java.nio.charset.Charset
import okhttp3.internal.commonEquals
import okhttp3.internal.commonHashCode
import okhttp3.internal.commonParameter
import okhttp3.internal.commonToMediaType
import okhttp3.internal.commonToMediaTypeOrNull
import okhttp3.internal.commonToString

/**

  return null
}

internal fun MediaType.commonEquals(other: Any?): Boolean = other is MediaType && other.mediaType == mediaType

internal fun MediaType.commonToString(): String = mediaType

internal fun MediaType.commonHashCode(): Int = mediaType.hashCode()

private const val TOKEN = "([a-zA-Z0-9-!#$%&'*+.^_`{|}~]+)"
private const val QUOTED = "\"([^\"]*)\""
private val TYPE_SUBTYPE = Regex("$TOKEN/$TOKEN")

  return result
}

internal fun Headers.commonEquals(other: Any?): Boolean {
  return other is Headers && namesAndValues.contentEquals(other.namesAndValues)
}

internal fun Headers.commonHashCode(): Int = namesAndValues.contentHashCode()

internal fun Headers.commonToString(): String {
  return buildString {
    for (i in 0 until size) {
      val name = name(i)
      val value = value(i)