require(tlsVersions.isNotEmpty()) { "At least one TLS version is required" }

        this.tlsVersions = tlsVersions.copyOf() as Array<String> // Defensive copy.
      }

    @Deprecated(
      "since OkHttp 3.13 all TLS-connections are expected to support TLS extensions.\n" +
        "In a future release setting this to true will be unnecessary and setting it to false\n" +
        "will have no effect.",
    )