gistfile1.cs

public class DocumentClient : IDocumentService
{
    public string InsertDocument(string documentClass, string filePath)
    {
        using (var service = new WcfService<IDocumentService>())
        {
            return InsertDocument(documentClass, filePath, service);
        }
    }

    internal static string InsertDocument(string documentClass, string filePath, WcfService<IDocumentService> service)
    {
        try
        {
            return service.Channel.InsertDocument(documentClass, filePath);
        }
        catch (FaultException<CALFault> ex)
        {
            throw new DocumentCALException(ex);
        }
        catch (Exception ex)
        {
            throw new ServiceUnavailableException(ex.Message, ex);
        }
    }
}