.apply {
        if (connectionSpec != null) {
          connectionSpecs(
            listOf(
              ConnectionSpec.Builder(connectionSpec)
                .apply {
                  if (tlsVersion != null) {
                    tlsVersions(tlsVersion)
                  }
                  if (cipherSuites != null) {
                    cipherSuites(*cipherSuites.toTypedArray())
                  }