Add summary field to info object

Author: MaggieKimani1

src/Microsoft.OpenApi.Readers/V3/OpenApiInfoDeserializer.cs

@@ -29,6 +29,12 @@ internal static partial class OpenApiV3Deserializer
                     o.Version = n.GetScalarValue();
                 }
             },
+            {
+                "summary", (o, n) =>
+                {
+                    o.Summary = n.GetScalarValue();
+                }
+            },
             {
                 "description", (o, n) =>
                 {

src/Microsoft.OpenApi/Models/OpenApiInfo.cs

@@ -3,7 +3,6 @@
 
 using System;
 using System.Collections.Generic;
-using Microsoft.OpenApi.Any;
 using Microsoft.OpenApi.Interfaces;
 using Microsoft.OpenApi.Writers;
 
@@ -19,11 +18,16 @@ public class OpenApiInfo : IOpenApiSerializable, IOpenApiExtensible
         /// </summary>
         public string Title { get; set; }
 
+        /// <summary>
+        /// A short summary of the API.
+        /// </summary>
+        public string Summary { get; set; }
+        
         /// <summary>
         /// A short description of the application.
         /// </summary>
         public string Description { get; set; }
-
+        
         /// <summary>
         /// REQUIRED. The version of the OpenAPI document.
         /// </summary>
@@ -60,6 +64,7 @@ public OpenApiInfo() {}
         public OpenApiInfo(OpenApiInfo info)
         {
             Title = info?.Title ?? Title;
+            Summary = info?.Summary ?? Summary;
             Description = info?.Description ?? Description;
             Version = info?.Version ?? Version;
             TermsOfService = info?.TermsOfService ?? TermsOfService;
@@ -83,6 +88,9 @@ public void SerializeAsV3(IOpenApiWriter writer)
             // title
             writer.WriteProperty(OpenApiConstants.Title, Title);
 
+            // summary
+            writer.WriteProperty(OpenApiConstants.Summary, Summary);
+            
             // description
             writer.WriteProperty(OpenApiConstants.Description, Description);