}
        require(null !in (protocolsCopy as List<Protocol?>)) {
          "protocols must not contain null"
        }

        // Remove protocols that we no longer support.
        @Suppress("DEPRECATION")
        protocolsCopy.remove(Protocol.SPDY_3)

        if (protocolsCopy != this.protocols) {
          this.routeDatabase = null
        }

            alreadyEncoded = true,
            strict = true,
            unicodeAllowed = true,
          )
      }

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

import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertFailsWith
import kotlin.test.fail
import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.UrlComponentEncodingTester.Encoding

@Suppress("HttpUrlsUsage") // Don't warn if we should be using https://.
open class HttpUrlTest {
  protected open fun parse(url: String): HttpUrl = url.toHttpUrl()

  protected open fun assertInvalid(
    string: String,

 * @author Doug Lea ({@code ConcurrentHashMap})
 */
// TODO(kak): Consider removing @CanIgnoreReturnValue from this class.
@J2ktIncompatible
@GwtIncompatible
@SuppressWarnings({
  "GuardedBy", // TODO(b/35466881): Fix or suppress.
  "nullness", // too much trouble for the payoff
})
@NullUnmarked // TODO(cpovirk): Annotate for nullness.
final class MapMakerInternalMap<
        K,
        V,