Expose public setter of namespace

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator.ClientModel/src/Providers/RestClientProvider.cs

@@ -46,7 +46,7 @@ public RestClientProvider(InputClient inputClient, ClientProvider clientProvider
 
         protected override string BuildName() => _inputClient.Name.ToCleanName();
 
-        protected override string BuildNamespace() => ClientProvider.Namespace;
+        protected override string BuildNamespace() => ClientProvider.Type.Namespace;
 
         protected override PropertyProvider[] BuildProperties()
         {

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator/src/PostProcessing/GeneratedCodeWorkspace.cs

@@ -214,7 +214,7 @@ public async Task PostProcessAsync()
             var modelFactory = ModelFactoryProvider.FromInputLibrary();
             var postProcessor = new PostProcessor(
                 [.. CodeModelPlugin.Instance.TypeFactory.UnionTypes, .. CodeModelPlugin.Instance.TypesToKeep],
-                modelFactoryFullName: $"{modelFactory.Namespace}.{modelFactory.Name}");
+                modelFactoryFullName: $"{modelFactory.Type.Namespace}.{modelFactory.Name}");
             switch (Configuration.UnreferencedTypesHandling)
             {
                 case Configuration.UnreferencedTypesHandlingOption.KeepAll:

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator/src/Primitives/CSharpType.cs

@@ -180,7 +180,7 @@ internal CSharpType(
             _underlyingType = underlyingEnumType;
         }
 
-        public string Namespace { get; private init; }
+        public string Namespace { get; set; }
         public string Name { get; private init; }
         public CSharpType? DeclaringType { get; private init; }
         public bool IsValueType { get; private init; }

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator/src/Providers/CanonicalTypeProvider.cs

@@ -35,7 +35,7 @@ public CanonicalTypeProvider(TypeProvider generatedTypeProvider, InputType? inpu
 
         protected override string BuildName() => _generatedTypeProvider.Name;
 
-        protected override string BuildNamespace() => _generatedTypeProvider.Namespace;
+        protected override string BuildNamespace() => _generatedTypeProvider.Type.Namespace;
 
         protected override TypeSignatureModifiers BuildDeclarationModifiers() => _generatedTypeProvider.DeclarationModifiers;
 

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator/src/Providers/EnumProvider.cs

@@ -9,7 +9,7 @@
 
 namespace Microsoft.TypeSpec.Generator.Providers
 {
-    internal abstract class EnumProvider : TypeProvider
+    public abstract class EnumProvider : TypeProvider
     {
         private readonly InputEnumType _inputType;
 

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator/src/Providers/ModelFactoryProvider.cs

@@ -14,7 +14,7 @@
 
 namespace Microsoft.TypeSpec.Generator.Providers
 {
-    internal class ModelFactoryProvider : TypeProvider
+    public class ModelFactoryProvider : TypeProvider
     {
         private const string ModelFactorySuffix = "ModelFactory";
         private const string AdditionalBinaryDataParameterName = "additionalBinaryDataProperties";

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator/src/Providers/TypeProvider.cs

@@ -90,9 +90,6 @@ private IReadOnlyList<FieldProvider> BuildAllCustomFields()
 
         private string? _name;
 
-        public string Namespace => _namespace ??= BuildNamespace();
-        private string? _namespace;
-
         protected virtual FormattableString Description { get; } = FormattableStringHelpers.Empty;
 
         private XmlDocProvider? _xmlDocs;

packages/http-client-csharp/generator/Microsoft.TypeSpec.Generator/test/Providers/CanonicalTypeProviderTests.cs

@@ -49,7 +49,7 @@ public void ValidateName()
         [Test]
         public void ValidateNamespace()
         {
-            Assert.AreEqual(_typeProvider.Namespace, _typeProvider.CanonicalView.Namespace);
+            Assert.AreEqual(_typeProvider.Type.Namespace, _typeProvider.CanonicalView.Type.Namespace);
         }
 
         [Test]