chore: resolve merge conflicts

Author: MaggieKimani1

src/Microsoft.OpenApi/Interfaces/IOpenApiReferenceHolder.cs

@@ -20,7 +20,7 @@ public interface IOpenApiReferenceHolder<out T, V> : IOpenApiReferenceHolder whe
         /// <summary>
         /// Gets the recursively resolved target object.
         /// </summary>
-        T RecursiveTarget { get; }
+        T? RecursiveTarget { get; }
 
         /// <summary>
         /// Copy the reference as a target element with overrides.

src/Microsoft.OpenApi/Models/References/BaseOpenApiReferenceHolder.cs

@@ -20,7 +20,7 @@ public virtual V? Target
         }
     }
     /// <inheritdoc/>
-    public T RecursiveTarget
+    public T? RecursiveTarget
     {
         get
         {

src/Microsoft.OpenApi/Models/References/OpenApiTagReference.cs

@@ -17,7 +17,7 @@ public class OpenApiTagReference : BaseOpenApiReferenceHolder<OpenApiTag, IOpenA
         /// <summary>
         /// Resolved target of the reference.
         /// </summary>
-        public override IOpenApiTag Target
+        public override IOpenApiTag? Target
         {
             get
             {

test/Microsoft.OpenApi.Tests/PublicApi/PublicApi.approved.txt

@@ -1242,7 +1242,7 @@ namespace Microsoft.OpenApi.Models.References
         where V : Microsoft.OpenApi.Interfaces.IOpenApiReferenceable, Microsoft.OpenApi.Interfaces.IOpenApiSerializable
     {
         protected BaseOpenApiReferenceHolder(Microsoft.OpenApi.Models.References.BaseOpenApiReferenceHolder<T, V> source) { }
-        protected BaseOpenApiReferenceHolder(string referenceId, Microsoft.OpenApi.Models.OpenApiDocument hostDocument, Microsoft.OpenApi.Models.ReferenceType referenceType, string externalResource) { }
+        protected BaseOpenApiReferenceHolder(string referenceId, Microsoft.OpenApi.Models.OpenApiDocument? hostDocument, Microsoft.OpenApi.Models.ReferenceType referenceType, string? externalResource) { }
         public T RecursiveTarget { get; }
         public Microsoft.OpenApi.Models.OpenApiReference Reference { get; init; }
         public virtual V Target { get; }
@@ -1439,12 +1439,12 @@ namespace Microsoft.OpenApi.Models.References
     }
     public class OpenApiTagReference : Microsoft.OpenApi.Models.References.BaseOpenApiReferenceHolder<Microsoft.OpenApi.Models.OpenApiTag, Microsoft.OpenApi.Models.Interfaces.IOpenApiTag>, Microsoft.OpenApi.Interfaces.IOpenApiElement, Microsoft.OpenApi.Interfaces.IOpenApiReadOnlyExtensible, Microsoft.OpenApi.Interfaces.IOpenApiReferenceable, Microsoft.OpenApi.Interfaces.IOpenApiSerializable, Microsoft.OpenApi.Interfaces.IShallowCopyable<Microsoft.OpenApi.Models.Interfaces.IOpenApiTag>, Microsoft.OpenApi.Models.Interfaces.IOpenApiReadOnlyDescribedElement, Microsoft.OpenApi.Models.Interfaces.IOpenApiTag
     {
-        public OpenApiTagReference(string referenceId, Microsoft.OpenApi.Models.OpenApiDocument hostDocument = null, string externalResource = null) { }
-        public string Description { get; }
-        public System.Collections.Generic.IDictionary<string, Microsoft.OpenApi.Interfaces.IOpenApiExtension> Extensions { get; }
-        public Microsoft.OpenApi.Models.OpenApiExternalDocs ExternalDocs { get; }
-        public string Name { get; }
-        public override Microsoft.OpenApi.Models.Interfaces.IOpenApiTag Target { get; }
+        public OpenApiTagReference(string referenceId, Microsoft.OpenApi.Models.OpenApiDocument? hostDocument = null, string? externalResource = null) { }
+        public string? Description { get; }
+        public System.Collections.Generic.IDictionary<string, Microsoft.OpenApi.Interfaces.IOpenApiExtension>? Extensions { get; }
+        public Microsoft.OpenApi.Models.OpenApiExternalDocs? ExternalDocs { get; }
+        public string? Name { get; }
+        public override Microsoft.OpenApi.Models.Interfaces.IOpenApiTag? Target { get; }
         public override Microsoft.OpenApi.Models.Interfaces.IOpenApiTag CopyReferenceAsTargetElementWithOverrides(Microsoft.OpenApi.Models.Interfaces.IOpenApiTag source) { }
         public Microsoft.OpenApi.Models.Interfaces.IOpenApiTag CreateShallowCopy() { }
     }