return lock.withLock(action)
  }

  inline fun <T> Http2Connection.withLock(action: () -> T): T {
    contract { callsInPlace(action, InvocationKind.EXACTLY_ONCE) }
    return lock.withLock(action)
  }

  inline fun <T> Http2Stream.withLock(action: () -> T): T {
    contract { callsInPlace(action, InvocationKind.EXACTLY_ONCE) }
    return lock.withLock(action)
  }

  inline fun <T> Http2Writer.withLock(action: () -> T): T {

        .addHeader("Cache-Control: s-maxage=180")
        .addHeader("Cache-Control: max-age=60")
        .build(),
    )
  }

  @Test
  fun requestMethodOptionsIsNotCached() {
    testRequestMethod("OPTIONS", false)
  }

  @Test
  fun requestMethodGetIsCached() {
    testRequestMethod("GET", true)
  }

  @Test
  fun requestMethodHeadIsNotCached() {

   * Servers that enforce this may send an exception message including the string
   * `INADEQUATE_SECURITY`.
   */
  HTTP_2("h2"),

  /**
   * Cleartext HTTP/2 with no "upgrade" round trip. This option requires the client to have prior
   * knowledge that the server supports cleartext HTTP/2.
   *
   * See also [Starting HTTP/2 with Prior Knowledge][rfc_7540_34].
   *

        if: github.repository == 'square/okhttp' && github.ref == 'refs/heads/master'
        uses: mikepenz/action-junit-report@v4
        with:
          report_paths: '**/build/test-results/*/TEST-*.xml'
          check_name: OpenJDK 11 Test Report

      - name: Publish Test Results
        uses: EnricoMi/publish-unit-test-result-action@v2
        if: github.repository == 'square/okhttp' && github.ref == 'refs/heads/master'
        with: