/// <summary>
        /// Implementation for the SetProperties method.
        /// </summary>
        /// <param name="blob">The blob.</param>
        /// <param name="attributes">The attributes.</param>
        /// <param name="accessCondition">An object that represents the access conditions for the blob. If null, no condition is used.</param>
        /// <param name="options">An object that specifies any additional options for the request.</param>
        /// <returns>
        /// A <see cref="RESTCommand{T}" /> that sets the properties.
        /// </returns>
        internal static RESTCommand <NullType> SetPropertiesImpl(ICloudBlob blob, BlobAttributes attributes, AccessCondition accessCondition, BlobRequestOptions options)
        {
            RESTCommand <NullType> putCmd = new RESTCommand <NullType>(blob.ServiceClient.Credentials, attributes.Uri);

            putCmd.ApplyRequestOptions(options);
            putCmd.BuildRequestDelegate = (uri, builder, serverTimeout, ctx) => BlobHttpWebRequestFactory.SetProperties(uri, serverTimeout, attributes.Properties, accessCondition, ctx);
            putCmd.SetHeaders           = (r, ctx) => BlobHttpWebRequestFactory.AddMetadata(r, attributes.Metadata);
            putCmd.SignRequest          = blob.ServiceClient.AuthenticationHandler.SignRequest;
            putCmd.PreProcessResponse   = (cmd, resp, ex, ctx) =>
            {
                HttpResponseParsers.ProcessExpectedStatusCodeNoException(HttpStatusCode.OK, resp, NullType.Value, cmd, ex, ctx);
                CloudBlobSharedImpl.ParseSizeAndLastModified(attributes, resp);
                return(NullType.Value);
            };

            return(putCmd);
        }
        /// <summary>
        /// Implementation for the SetProperties method.
        /// </summary>
        /// <param name="accessCondition">An object that represents the access conditions for the blob. If null, no condition is used.</param>
        /// <param name="options">An object that specifies any additional options for the request.</param>
        /// <returns>A <see cref="RESTCommand"/> that sets the metadata.</returns>
        internal static RESTCommand <NullType> SetPropertiesImpl(ICloudBlob blob, BlobAttributes attributes, AccessCondition accessCondition, BlobRequestOptions options)
        {
            RESTCommand <NullType> putCmd = new RESTCommand <NullType>(blob.ServiceClient.Credentials, attributes.Uri);

            putCmd.ApplyRequestOptions(options);
            putCmd.Handler      = blob.ServiceClient.AuthenticationHandler;
            putCmd.BuildClient  = HttpClientFactory.BuildHttpClient;
            putCmd.BuildRequest = (cmd, cnt, ctx) =>
            {
                HttpRequestMessage msg = BlobHttpRequestMessageFactory.SetProperties(cmd.Uri, cmd.ServerTimeoutInSeconds, attributes.Properties, accessCondition, cnt, ctx);
                BlobHttpRequestMessageFactory.AddMetadata(msg, attributes.Metadata);
                return(msg);
            };
            putCmd.PreProcessResponse = (cmd, resp, ex, ctx) =>
            {
                HttpResponseParsers.ProcessExpectedStatusCodeNoException(HttpStatusCode.OK, resp, NullType.Value, cmd, ex, ctx);
                CloudBlobSharedImpl.ParseSizeAndLastModified(attributes, resp);
                return(NullType.Value);
            };

            return(putCmd);
        }