Merge pull request #20 from asset-t/master

[fix] null args

Author: i4004

src/Simplify.Web.Swagger/SimplifyWebDocumentFilter.cs

@@ -12,6 +12,13 @@ namespace Simplify.Web.Swagger
 	public class SimplifyWebDocumentFilter : IDocumentFilter
 	{
 		private static SimplifyWebSwaggerArgs? _args;
+
+		/// <summary>
+		/// Initializes an instance of <see cref="SimplifyWebDocumentFilter"/>.
+		/// </summary>
+		public SimplifyWebDocumentFilter()
+		{
+		}
 
 		/// <summary>
 		/// Initializes an instance of <see cref="SimplifyWebDocumentFilter"/>.

src/Simplify.Web.Swagger/SimplifyWebSwaggerExtensions.cs

@@ -11,5 +11,11 @@ public static class SimplifyWebSwaggerServiceCollectionExtensions
 	/// <summary>
 	/// Add Simplify.Web controllers to Swagger documentation generation
 	/// </summary>
-	public static void AddSimplifyWebSwagger(this SwaggerGenOptions options, SimplifyWebSwaggerArgs? args = null) => options.DocumentFilter<SimplifyWebDocumentFilter>(args);
+	public static void AddSimplifyWebSwagger(this SwaggerGenOptions options, SimplifyWebSwaggerArgs? args = null)
+	{ 
+		if (args is null)
+			options.DocumentFilter<SimplifyWebDocumentFilter>();
+		else 
+			options.DocumentFilter<SimplifyWebDocumentFilter>(args);
+	}
 }