Common code to open and close a DocumentConverterServiceClient

/// <summary>
        /// Configure the bindings and endpoints and open the service using the specified address.
        /// </summary>
        /// <param name="address">URL of the endpoint.</param>
        /// <returns>An instance of the web service.</returns>
        public static DocumentConverterServiceClient OpenService(string address)
        {
            DocumentConverterServiceClient client = null;
            try
            {
                BasicHttpBinding binding = new BasicHttpBinding();
                // Use standard Windows security.
                binding.Security.Mode = BasicHttpSecurityMode.TransportCredentialOnly;
                binding.Security.Transport.ClientCredentialType = HttpClientCredentialType.Windows;

                // Increase the client timeout to deal with (very) long running requests.
                binding.SendTimeout = TimeSpan.FromMinutes(120);
                binding.ReceiveTimeout = TimeSpan.FromMinutes(120);
                // Set the maximum document size to 50MB.
                binding.MaxReceivedMessageSize = 50 * 1024 * 1024;
                binding.ReaderQuotas.MaxArrayLength = 50 * 1024 * 1024;
                binding.ReaderQuotas.MaxStringContentLength = 50 * 1024 * 1024;
                EndpointAddress epa = new EndpointAddress(new Uri(address));
                client = new DocumentConverterServiceClient(binding, epa);
                client.OpenAsync();
                return client;
            }
            catch (Exception)
            {
                CloseService(client);
                throw;
            }

        }
        /// <summary>
        /// Check if the client is open and then close it.
        /// </summary>
        /// <param name="client">The client to close.</param>
        public static void CloseService(DocumentConverterServiceClient client)
        {
            if (client != null && client.State == CommunicationState.Opened)
                client.CloseAsync().GetAwaiter().GetResult();
        }