true
      } catch (_: ClassNotFoundException) {
        false
      }

    fun buildIfSupported(): OpenJSSEPlatform? = if (isSupported) OpenJSSEPlatform() else null
  }

import mockwebserver3.junit5.StartStop
import okhttp3.TestUtil.assumeNetwork
import okhttp3.internal.connectionAccessor
import okhttp3.internal.exchangeAccessor
import okhttp3.internal.platform.OpenJSSEPlatform
import okhttp3.testing.PlatformRule
import okhttp3.tls.HandshakeCertificates
import okhttp3.tls.HeldCertificate
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.BeforeEach

import okhttp3.internal.platform.ConscryptPlatform
import okhttp3.internal.platform.Jdk8WithJettyBootPlatform
import okhttp3.internal.platform.Jdk9Platform
import okhttp3.internal.platform.OpenJSSEPlatform
import okhttp3.internal.platform.Platform

@TargetClass(BouncyCastlePlatform::class)
@Delete
class TargetBouncyCastlePlatform

@TargetClass(ConscryptPlatform::class)
@Delete
class TargetConscryptPlatform

    if (isBouncyCastlePreferred) {
      val bc = BouncyCastlePlatform.buildIfSupported()

      if (bc != null) {
        return bc
      }
    }

    if (isOpenJSSEPreferred) {
      val openJSSE = OpenJSSEPlatform.buildIfSupported()

      if (openJSSE != null) {
        return openJSSE
      }
    }

    // An Oracle JDK 9 like OpenJDK, or JDK 8 251+.
    val jdk9 = Jdk9Platform.buildIfSupported()