A few tweaks mentioned by the AI.

Author: Jaben

src/Gotenberg.Sharp.Api.Client/Domain/Builders/Faceted/HtmlConversionBehaviorBuilder.cs

@@ -34,6 +34,11 @@ internal HtmlConversionBehaviorBuilder(HtmlConversionBehaviors htmlConversionBeh
     /// <remarks>Prefer <see cref="SetBrowserWaitExpression" /> over waitDelay.</remarks>
     public HtmlConversionBehaviorBuilder SetBrowserWaitDelay(int seconds)
     {
+        if (seconds < 0)
+        {
+            throw new ArgumentOutOfRangeException(nameof(seconds), "Wait delay must be zero or positive.");
+        }
+
         _htmlConversionBehaviors.WaitDelay = $"{seconds}s";
 
         return this;
@@ -78,21 +83,6 @@ public HtmlConversionBehaviorBuilder SetUserAgent(string userAgent)
         return this;
     }
 
-    /// <summary>
-    ///     Sets extra HTTP headers that Chromium will send when loading the HTML
-    /// </summary>
-    /// <param name="headerName"></param>
-    /// <param name="headerValue"></param>
-    /// <returns></returns>
-    /// <exception cref="InvalidOperationException"></exception>
-    /// <exception cref="JsonReaderException"></exception>
-    public HtmlConversionBehaviorBuilder AddAdditionalHeaders(string headerName, string headerValue)
-    {
-        var header = string.Format("{0}{2}{1}", "{", "}", $"{'"'}{headerName}{'"'} : {'"'}{headerValue}{'"'}");
-
-        return AddAdditionalHeaders(JObject.Parse(header));
-    }
-
     /// <summary>
     ///     Sets extra HTTP headers that Chromium will send when loading the HTML
     /// </summary>

src/Gotenberg.Sharp.Api.Client/Domain/Builders/Faceted/HtmlConversionBehaviorBuilderExtensions.cs

@@ -13,6 +13,8 @@
 //  See the License for the specific language governing permissions and
 //  limitations under the License.
 
+using Newtonsoft.Json.Linq;
+
 namespace Gotenberg.Sharp.API.Client.Domain.Builders.Faceted;
 
 public static class HtmlConversionBehaviorBuilderExtensions
@@ -83,4 +85,18 @@ public static HtmlConversionBehaviorBuilder AddCookies(this HtmlConversionBehavi
 
         return builder;
     }
+
+    /// <summary>
+    ///     Sets extra HTTP headers that Chromium will send when loading the HTML
+    /// </summary>
+    /// <param name="builder">HtmlConversionBehaviorBuilder</param>
+    /// <param name="headerName"></param>
+    /// <param name="headerValue"></param>
+    /// <returns></returns>
+    /// <exception cref="InvalidOperationException"></exception>
+    /// <exception cref="JsonReaderException"></exception>
+    public static HtmlConversionBehaviorBuilder AddAdditionalHeaders(this HtmlConversionBehaviorBuilder builder, string headerName, string headerValue)
+    {
+        return builder.AddAdditionalHeaders(new JObject { [headerName] = headerValue });
+    }
 }

src/Gotenberg.Sharp.Api.Client/Domain/Builders/Faceted/WebhookBuilder.cs

@@ -79,13 +79,13 @@ public WebhookBuilder SetErrorUrl( Uri url, HttpMethod? method = null)
 
     public WebhookBuilder AddExtraHeader(string name, string value)
     {
-        return this.AddExtraHeader(name, new[] { value });
+        return this.AddExtraHeader(name, [value]);
     }
 
 
     public WebhookBuilder AddExtraHeader(KeyValuePair<string, string> header)
     {
-        return this.AddExtraHeader(header.Key, new[] { header.Value });
+        return this.AddExtraHeader(header.Key, [header.Value]);
     }
 
 

src/Gotenberg.Sharp.Api.Client/Infrastructure/Constants.cs

@@ -211,7 +211,7 @@ public static class Html
             public static class Shared
             {
                 /// <summary>
-                ///     From the header & footer tabs
+                ///     From the header &amp; footer tabs
                 /// </summary>
                 public static class FileNames
                 {