/// <param name="cancellationToken">A cancellation token that can be used by other objects or threads to receive notice of cancellation.</param>
        /// <param name="item_id">The eBay RESTful identifier of an item you want to bid on. This ID is returned by the Browse and Feed API methods. RESTful Item ID Example: v1|272394640372|0 For more information about item ID for RESTful APIs, see the Legacy API compatibility section of the Buy APIs Overview.</param>
        /// <param name="x_EBAY_C_MARKETPLACE_ID">The ID of the eBay marketplace where the buyer is based. Note: This value is case sensitive. For example: &amp;nbsp;&amp;nbsp;X-EBAY-C-MARKETPLACE-ID = EBAY_US For a list of supported sites see, API Restrictions.</param>
        /// <returns>OK</returns>
        /// <exception cref="eBayApi.ApiException">A server side error occurred.</exception>
        public async System.Threading.Tasks.Task <PlaceProxyBidResponse> PlaceProxyBidAsync(string item_id, string x_EBAY_C_MARKETPLACE_ID, PlaceProxyBidRequest body = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken))
        {
            if (item_id == null)
            {
                throw new System.ArgumentNullException("item_id");
            }

            var urlBuilder_ = new System.Text.StringBuilder();

            urlBuilder_.Append(BaseUrl != null ? BaseUrl.TrimEnd('/') : "").Append("/bidding/{item_id}/place_proxy_bid");
            urlBuilder_.Replace("{item_id}", System.Uri.EscapeDataString(ConvertToString(item_id, System.Globalization.CultureInfo.InvariantCulture)));

            var client_ = _httpClient;

            try
            {
                using (var request_ = new System.Net.Http.HttpRequestMessage())
                {
                    if (x_EBAY_C_MARKETPLACE_ID == null)
                    {
                        throw new System.ArgumentNullException("x_EBAY_C_MARKETPLACE_ID");
                    }
                    request_.Headers.TryAddWithoutValidation("X-EBAY-C-MARKETPLACE-ID", ConvertToString(x_EBAY_C_MARKETPLACE_ID, System.Globalization.CultureInfo.InvariantCulture));
                    var content_ = new System.Net.Http.StringContent(Newtonsoft.Json.JsonConvert.SerializeObject(body, _settings.Value));
                    content_.Headers.ContentType = System.Net.Http.Headers.MediaTypeHeaderValue.Parse("application/json");
                    request_.Content             = content_;
                    request_.Method = new System.Net.Http.HttpMethod("POST");
                    request_.Headers.Accept.Add(System.Net.Http.Headers.MediaTypeWithQualityHeaderValue.Parse("application/json"));

                    PrepareRequest(client_, request_, urlBuilder_);
                    var url_ = urlBuilder_.ToString();
                    request_.RequestUri = new System.Uri(url_, System.UriKind.RelativeOrAbsolute);
                    PrepareRequest(client_, request_, url_);

                    var response_ = await client_.SendAsync(request_, System.Net.Http.HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);

                    try
                    {
                        var headers_ = System.Linq.Enumerable.ToDictionary(response_.Headers, h_ => h_.Key, h_ => h_.Value);
                        if (response_.Content != null && response_.Content.Headers != null)
                        {
                            foreach (var item_ in response_.Content.Headers)
                            {
                                headers_[item_.Key] = item_.Value;
                            }
                        }

                        ProcessResponse(client_, response_);

                        var status_ = ((int)response_.StatusCode).ToString();
                        if (status_ == "200")
                        {
                            var objectResponse_ = await ReadObjectResponseAsync <PlaceProxyBidResponse>(response_, headers_).ConfigureAwait(false);

                            return(objectResponse_.Object);
                        }
                        else
                        if (status_ == "400")
                        {
                            string responseText_ = (response_.Content == null) ? null : await response_.Content.ReadAsStringAsync().ConfigureAwait(false);

                            throw new eBayApi.ApiException("Bad request", (int)response_.StatusCode, responseText_, headers_, null);
                        }
                        else
                        if (status_ == "404")
                        {
                            string responseText_ = (response_.Content == null) ? null : await response_.Content.ReadAsStringAsync().ConfigureAwait(false);

                            throw new eBayApi.ApiException("Not found", (int)response_.StatusCode, responseText_, headers_, null);
                        }
                        else
                        if (status_ == "409")
                        {
                            string responseText_ = (response_.Content == null) ? null : await response_.Content.ReadAsStringAsync().ConfigureAwait(false);

                            throw new eBayApi.ApiException("Conflict", (int)response_.StatusCode, responseText_, headers_, null);
                        }
                        else
                        if (status_ == "500")
                        {
                            string responseText_ = (response_.Content == null) ? null : await response_.Content.ReadAsStringAsync().ConfigureAwait(false);

                            throw new eBayApi.ApiException("Internal Server Error", (int)response_.StatusCode, responseText_, headers_, null);
                        }
                        else
                        if (status_ != "200" && status_ != "204")
                        {
                            var responseData_ = response_.Content == null ? null : await response_.Content.ReadAsStringAsync().ConfigureAwait(false);

                            throw new eBayApi.ApiException("The HTTP status code of the response was not expected (" + (int)response_.StatusCode + ").", (int)response_.StatusCode, responseData_, headers_, null);
                        }

                        return(default(PlaceProxyBidResponse));
                    }
                    finally
                    {
                        if (response_ != null)
                        {
                            response_.Dispose();
                        }
                    }
                }
            }
            finally
            {
            }
        }
 /// <param name="item_id">The eBay RESTful identifier of an item you want to bid on. This ID is returned by the Browse and Feed API methods. RESTful Item ID Example: v1|272394640372|0 For more information about item ID for RESTful APIs, see the Legacy API compatibility section of the Buy APIs Overview.</param>
 /// <param name="x_EBAY_C_MARKETPLACE_ID">The ID of the eBay marketplace where the buyer is based. Note: This value is case sensitive. For example: &amp;nbsp;&amp;nbsp;X-EBAY-C-MARKETPLACE-ID = EBAY_US For a list of supported sites see, API Restrictions.</param>
 /// <returns>OK</returns>
 /// <exception cref="eBayApi.ApiException">A server side error occurred.</exception>
 public PlaceProxyBidResponse PlaceProxyBid(string item_id, string x_EBAY_C_MARKETPLACE_ID, PlaceProxyBidRequest body = null)
 {
     return(System.Threading.Tasks.Task.Run(async() => await PlaceProxyBidAsync(item_id, x_EBAY_C_MARKETPLACE_ID, body, System.Threading.CancellationToken.None)).GetAwaiter().GetResult());
 }