diff --git a/cspell.yaml b/cspell.yaml
index 16efe6871a..5c7741356f 100644
--- a/cspell.yaml
+++ b/cspell.yaml
@@ -89,6 +89,7 @@ words:
   - SERVICERP
   - seti
   - stac
+  - strconv
   - tcgc
   - tsmv
   - userrp
diff --git a/website/src/content/docs/docs/howtos/Generate client libraries/02package.mdx b/website/src/content/docs/docs/howtos/Generate client libraries/02package.mdx
index de8ecdecd0..70c43d1f14 100644
--- a/website/src/content/docs/docs/howtos/Generate client libraries/02package.mdx	
+++ b/website/src/content/docs/docs/howtos/Generate client libraries/02package.mdx	
@@ -85,7 +85,27 @@ client.feed(Food(name="pork", "quantity="1"))
 ```
 
 ```csharp
-// TODO
+namespace PetStore
+{
+  public partial class Food
+  {
+    public Food(string name, int quantity);
+    public string Name { get; }
+    public int Quantity { get; }
+  }
+
+  public partial class PetStoreClient
+  {
+    public PetStoreClient(Uri endpoint);
+    public PetStoreClient(Uri endpoint, PetStoreClientOptions options);
+    // protocol method
+    public virtual Response Feed(RequestContent content, RequestContext context = null);
+    public virtual Task<Response> FeedAsync(RequestContent content, RequestContext context = null);
+    // convenience method
+    public virtual Response Feed(Food food, CancellationToken cancellationToken = default);
+    public virtual Task<Response> FeedAsync(Food food, CancellationToken cancellationToken = default);
+  }
+}
 ```
 
 ```typescript
@@ -189,7 +209,26 @@ namespace Customization;
 ```
 
 ```csharp
-// TODO
+// Food is generated in the PetStore.Models namespace.
+namespace PetStore.Models
+{
+  public partial class Food
+  {
+    public Food(string name, int quantity);
+    public string Name { get; }
+    public int Quantity { get; }
+  }
+}
+
+namespace PetStore
+{
+  public partial class PetStoreClient
+  {
+    public PetStoreClient(Uri endpoint);
+    public virtual Response Feed(Food food, CancellationToken cancellationToken = default);
+    public virtual Task<Response> FeedAsync(Food food, CancellationToken cancellationToken = default);
+  }
+}
 ```
 
 ```typescript
diff --git a/website/src/content/docs/docs/howtos/Generate client libraries/03client.mdx b/website/src/content/docs/docs/howtos/Generate client libraries/03client.mdx
index 5942d94823..35ebdbb1eb 100644
--- a/website/src/content/docs/docs/howtos/Generate client libraries/03client.mdx	
+++ b/website/src/content/docs/docs/howtos/Generate client libraries/03client.mdx	
@@ -1342,7 +1342,25 @@ client2.pet()
 ```
 
 ```csharp
-// TODO
+namespace NewPetStore.Food
+{
+  public partial class FoodClient
+  {
+    public FoodClient(Uri endpoint);
+    public virtual Response Feed(CancellationToken cancellationToken = default);
+    public virtual Task<Response> FeedAsync(CancellationToken cancellationToken = default);
+  }
+}
+
+namespace NewPetStore.PetAction
+{
+  public partial class PetActionClient
+  {
+    public PetActionClient(Uri endpoint);
+    public virtual Response Pet(CancellationToken cancellationToken = default);
+    public virtual Task<Response> PetAsync(CancellationToken cancellationToken = default);
+  }
+}
 ```
 
 ```typescript
@@ -1948,7 +1966,9 @@ With `@clientInitialization`, you can change the initialization way, by passing
 @service
 namespace Storage;
 
-op download(@path blobName: string): void;
+namespace Blob {
+  op download(@path blobName: string): void;
+}
 ```
 
 ```typespec title="client.tsp"
@@ -1959,12 +1979,8 @@ using Azure.ClientGenerator.Core;
 
 namespace Customizations;
 
-model StorageClientOptions {
-  blobName: string;
-}
-
 @@clientInitialization(
-  Storage,
+  Storage.Blob,
   {
     initializedBy: InitializedBy.individually | InitializedBy.parent,
   }
@@ -1980,19 +1996,25 @@ NOT_SUPPORTED
 ```
 
 ```typescript
-export class StorageClient {
-  download(
-    blobName: string,
-    options: DownloadOptionalParams = { requestOptions: {} },
-  ): Promise<void>;
-}
-
-const client = new StorageClient();
-client.download("blobName");
+// TODO
 ```
 
 ```java
-// TODO
+// Java requires `enable-subclient: true` option in "tspconfig.yaml"
+
+public final class StorageClientBuilder {
+    public StorageClient buildClient();
+}
+
+// via ClientBuilder
+public final class BlobBuilder {
+    public BlobClient buildClient();
+}
+
+// via parent Client
+public final class StorageClient {
+    public BlobClient getBlobClient()
+}
 ```
 
 ```go
diff --git a/website/src/content/docs/docs/howtos/Generate client libraries/04method.mdx b/website/src/content/docs/docs/howtos/Generate client libraries/04method.mdx
index 4f60afc00f..c1a261a9c2 100644
--- a/website/src/content/docs/docs/howtos/Generate client libraries/04method.mdx	
+++ b/website/src/content/docs/docs/howtos/Generate client libraries/04method.mdx	
@@ -241,7 +241,14 @@ public final class PetStoreNamespaceClient {
 ```
 
 ```go
-// NOT_SUPPORTED
+// Go generates the model and method as `outputModel` / `getModel` (unexported),
+// so they are not part of the package's public API.
+type outputModel struct {
+    // READ-ONLY
+    Name *string
+}
+
+func (client *PetStoreNamespaceClient) getModel(ctx context.Context, apiVersion string, name string, options *petStoreNamespaceClientgetModelOptions) (petStoreNamespaceClientgetModelResponse, error)
 ```
 
 </ClientTabs>
@@ -340,7 +347,9 @@ public final class ImageGenerations {
 ```
 
 ```go
-// NOT_SUPPORTED
+// Go does not generate different code based on usage.
+// However, the model may not be generated if it's never used.
+// In that case, set a usage for the model.
 ```
 
 </ClientTabs>
@@ -1606,7 +1615,24 @@ def get(self, *, etag: Optional[str] = None, match_condition: Optional[MatchCond
 ```
 
 ```csharp
-# TODO
+namespace TestService
+{
+  public partial class Response
+  {
+    public string Name { get; }
+  }
+
+  public partial class TestServiceClient
+  {
+    public TestServiceClient(Uri endpoint);
+    // protocol method
+    public virtual Response Get(MatchConditions matchConditions, RequestContext context);
+    public virtual Task<Response> GetAsync(MatchConditions matchConditions, RequestContext context);
+    // convenience method
+    public virtual Response<Response> Get(MatchConditions matchConditions = default, CancellationToken cancellationToken = default);
+    public virtual Task<Response<Response>> GetAsync(MatchConditions matchConditions = default, CancellationToken cancellationToken = default);
+  }
+}
 ```
 
 ```typescript
@@ -1747,7 +1773,12 @@ public final class ContosoProviderHubClient {
 ```
 
 ```go
-// NOT_SUPPORTED
+// subscriptionID is moved from the client to the operation level.
+type ContosoProviderHubClient struct { ... }
+
+func (c *ClientFactory) NewContosoProviderHubClient() *ContosoProviderHubClient
+
+func (client *ContosoProviderHubClient) Get(ctx context.Context, subscriptionID string, extendedZoneName string, options *ContosoProviderHubClientGetOptions) (ContosoProviderHubClientGetResponse, error)
 ```
 
 </ClientTabs>
@@ -1835,7 +1866,8 @@ public void getSecrets(int maxResults);
 <ClientTabItem lang="go">
 
 ```go
-// NOT_SUPPORTED
+// maxResults is now required, exposed as a positional parameter.
+func (client *MyServiceClient) GetSecrets(ctx context.Context, maxResults int32, options *MyServiceClientGetSecretsOptions) (MyServiceClientGetSecretsResponse, error)
 ```
 
 </ClientTabItem>
@@ -1927,7 +1959,8 @@ public void getSecrets(int maxResults);
 <ClientTabItem lang="go">
 
 ```go
-// NOT_SUPPORTED
+// maxResults is now required, exposed as a positional parameter.
+func (client *MyServiceClient) GetSecrets(ctx context.Context, maxResults int32, options *MyServiceClientGetSecretsOptions) (MyServiceClientGetSecretsResponse, error)
 ```
 
 </ClientTabItem>
@@ -2003,7 +2036,8 @@ public void getSecrets();
 <ClientTabItem lang="go">
 
 ```go
-// NOT_SUPPORTED
+// maxResults parameter is removed.
+func (client *MyServiceClient) GetSecrets(ctx context.Context, options *MyServiceClientGetSecretsOptions) (MyServiceClientGetSecretsResponse, error)
 ```
 
 </ClientTabItem>
@@ -2142,7 +2176,8 @@ public void myOp(boolean c, String a, int b);
 <ClientTabItem lang="go">
 
 ```go
-// NOT_SUPPORTED
+// Parameters are now in the order: c, a, b.
+func (client *MyServiceClient) MyOp(ctx context.Context, c bool, a string, b int32, options *MyServiceClientMyOpOptions) (MyServiceClientMyOpResponse, error)
 ```
 
 </ClientTabItem>
@@ -2270,7 +2305,8 @@ export async function exists(
 ```
 
 ```java
-// NOT_SUPPORTED
+public boolean exists(String name);
+public Response<Boolean> existsWithResponse(String name, RequestOptions requestOptions);
 ```
 
 ```go
diff --git a/website/src/content/docs/docs/howtos/Generate client libraries/05pagingOperations.mdx b/website/src/content/docs/docs/howtos/Generate client libraries/05pagingOperations.mdx
index 1bbffb92d3..9eb91448ab 100644
--- a/website/src/content/docs/docs/howtos/Generate client libraries/05pagingOperations.mdx	
+++ b/website/src/content/docs/docs/howtos/Generate client libraries/05pagingOperations.mdx	
@@ -195,7 +195,21 @@ def list_with_page(self, **kwargs: Any) -> ItemPaged["_models.User"]:
 ```
 
 ```csharp
-// TODO
+namespace TestService
+{
+  public partial class User
+  {
+    public string Id { get; }
+    public string Name { get; }
+  }
+
+  public partial class TestServiceClient
+  {
+    public TestServiceClient(Uri endpoint);
+    public virtual Pageable<User> GetWithPage(string continuationToken = default, CancellationToken cancellationToken = default);
+    public virtual AsyncPageable<User> GetWithPageAsync(string continuationToken = default, CancellationToken cancellationToken = default);
+  }
+}
 ```
 
 ```typescript
@@ -218,7 +232,11 @@ NOT_SUPPORTED
 ```
 
 ```go
-// NOT_SUPPORTED
+func (client *MyServiceClient) NewListWithPagePager(options *MyServiceClientListWithPageOptions) *runtime.Pager[MyServiceClientListWithPageResponse]
+
+type MyServiceClientListWithPageOptions struct {
+    ContinuationToken *string
+}
 ```
 
 </ClientTabs>
@@ -255,7 +273,21 @@ def list_with_page(self, **kwargs: Any) -> ItemPaged["_models.User"]:
 ```
 
 ```csharp
-// TODO
+namespace TestService
+{
+  public partial class User
+  {
+    public string Id { get; }
+    public string Name { get; }
+  }
+
+  public partial class TestServiceClient
+  {
+    public TestServiceClient(Uri endpoint);
+    public virtual Pageable<User> GetWithPage(string continuationToken = default, CancellationToken cancellationToken = default);
+    public virtual AsyncPageable<User> GetWithPageAsync(string continuationToken = default, CancellationToken cancellationToken = default);
+  }
+}
 ```
 
 ```typescript
@@ -278,7 +310,11 @@ NOT_SUPPORTED
 ```
 
 ```go
-// NOT_SUPPORTED
+func (client *MyServiceClient) NewListWithPagePager(options *MyServiceClientListWithPageOptions) *runtime.Pager[MyServiceClientListWithPageResponse]
+
+type MyServiceClientListWithPageOptions struct {
+    ContinuationToken *string
+}
 ```
 
 </ClientTabs>
@@ -314,7 +350,21 @@ def list_with_page(self, **kwargs: Any) -> ItemPaged["_models.User"]:
 ```
 
 ```csharp
-// TODO
+namespace TestService
+{
+  public partial class User
+  {
+    public string Id { get; }
+    public string Name { get; }
+  }
+
+  public partial class TestServiceClient
+  {
+    public TestServiceClient(Uri endpoint);
+    public virtual Pageable<User> GetWithPage(string continuationToken = default, CancellationToken cancellationToken = default);
+    public virtual AsyncPageable<User> GetWithPageAsync(string continuationToken = default, CancellationToken cancellationToken = default);
+  }
+}
 ```
 
 ```typescript
@@ -337,7 +387,11 @@ NOT_SUPPORTED
 ```
 
 ```go
-// NOT_SUPPORTED
+func (client *MyServiceClient) NewListWithPagePager(options *MyServiceClientListWithPageOptions) *runtime.Pager[MyServiceClientListWithPageResponse]
+
+type MyServiceClientListWithPageOptions struct {
+    ContinuationToken *string
+}
 ```
 
 </ClientTabs>
@@ -373,7 +427,21 @@ def list_with_page(self, **kwargs: Any) -> ItemPaged["_models.User"]:
 ```
 
 ```csharp
-// TODO
+namespace TestService
+{
+  public partial class User
+  {
+    public string Id { get; }
+    public string Name { get; }
+  }
+
+  public partial class TestServiceClient
+  {
+    public TestServiceClient(Uri endpoint);
+    public virtual Pageable<User> GetWithPage(string continuationToken = default, CancellationToken cancellationToken = default);
+    public virtual AsyncPageable<User> GetWithPageAsync(string continuationToken = default, CancellationToken cancellationToken = default);
+  }
+}
 ```
 
 ```typescript
@@ -396,7 +464,11 @@ NOT_SUPPORTED
 ```
 
 ```go
-// NOT_SUPPORTED
+func (client *MyServiceClient) NewListWithPagePager(options *MyServiceClientListWithPageOptions) *runtime.Pager[MyServiceClientListWithPageResponse]
+
+type MyServiceClientListWithPageOptions struct {
+    ContinuationToken *string
+}
 ```
 
 </ClientTabs>
diff --git a/website/src/content/docs/docs/howtos/Generate client libraries/07multipart.mdx b/website/src/content/docs/docs/howtos/Generate client libraries/07multipart.mdx
index 233a6cda27..f4a95f12a4 100644
--- a/website/src/content/docs/docs/howtos/Generate client libraries/07multipart.mdx	
+++ b/website/src/content/docs/docs/howtos/Generate client libraries/07multipart.mdx	
@@ -47,7 +47,18 @@ def upload(
 ```
 
 ```csharp
-# TODO
+namespace TestService
+{
+  // The C# emitter currently generates only the protocol method (RequestContent) for
+  // multipart operations; no convenience overload or `MultipartRequest` model class
+  // is produced.
+  public partial class TestServiceClient
+  {
+    public TestServiceClient(Uri endpoint);
+    public virtual Response Upload(RequestContent content, string contentType, RequestContext context = null);
+    public virtual Task<Response> UploadAsync(RequestContent content, string contentType, RequestContext context = null);
+  }
+}
 ```
 
 ```typescript
diff --git a/website/src/content/docs/docs/howtos/Generate client libraries/08types.mdx b/website/src/content/docs/docs/howtos/Generate client libraries/08types.mdx
index f62ac503c3..0ada7c99ff 100644
--- a/website/src/content/docs/docs/howtos/Generate client libraries/08types.mdx	
+++ b/website/src/content/docs/docs/howtos/Generate client libraries/08types.mdx	
@@ -38,7 +38,13 @@ foo = Foo(prop="hello")
 <ClientTabItem lang="csharp" >
 
 ```csharp
-// TODO
+namespace Service
+{
+  public partial class Foo
+  {
+    public string Prop { get; }
+  }
+}
 ```
 
 </ClientTabItem>
@@ -107,7 +113,13 @@ foo = Foo(prop="hello")
 <ClientTabItem lang="csharp" >
 
 ```csharp
-// TODO
+namespace Service.Container
+{
+  public partial class Foo
+  {
+    public string Prop { get; }
+  }
+}
 ```
 
 </ClientTabItem>
@@ -177,7 +189,13 @@ foo = Foo(prop="hello")
 <ClientTabItem lang="csharp" >
 
 ```csharp
-// TODO
+namespace Service.Container
+{
+  public partial class Foo
+  {
+    public string Prop { get; }
+  }
+}
 ```
 
 </ClientTabItem>
@@ -1085,7 +1103,13 @@ public final class Animal implements JsonSerializable<Animal> {
 <ClientTabItem lang="go" >
 
 ```go
-// NOT_SUPPORTED
+type Animal struct {
+    // REQUIRED
+    Kind *string
+    // REQUIRED
+    Name                 *string
+    AdditionalProperties map[string]*string
+}
 ```
 
 </ClientTabItem>
@@ -1333,7 +1357,28 @@ class Foo(_model_base.Model):
 </ClientTabItem>
 <ClientTabItem lang="csharp" >
 
-TODO
+```csharp
+namespace TestService
+{
+  public partial class Foo
+  {
+    public string BasicNullableProperty { get; }
+    public Bar ModelNullableProperty { get; }
+    public LR? EnumNullableProperty { get; }
+  }
+
+  public partial class Bar
+  {
+    public string Prop { get; }
+  }
+
+  public enum LR
+  {
+    Left,
+    Right
+  }
+}
+```
 
 </ClientTabItem>
 <ClientTabItem lang="typescript" >
@@ -1353,7 +1398,23 @@ export type LR = "left" | "right";
 </ClientTabItem>
 <ClientTabItem lang="java" >
 
-TODO
+```java
+// All Java reference type is nullable.
+public final class Foo implements JsonSerializable<Foo> {
+    public String getBasicNullableProperty();
+    public Bar getModelNullableProperty();
+    public LR getEnumNullableProperty();
+}
+
+public final class Bar implements JsonSerializable<Bar> {
+    public String getProp();
+}
+
+public enum LR {
+    LEFT("left"),
+    RIGHT("right");
+}
+```
 
 </ClientTabItem>
 <ClientTabItem lang="go" >
@@ -2591,10 +2652,21 @@ serialized_prop = json.dumps(prop, cls=SdkJSONEncoder, format="string")
 <ClientTabItem lang="csharp" >
 
 ```csharp
-TODO
+// The property is exposed as `long`; serialization writes it as a JSON string.
+namespace TestService
+{
+  public partial class Test
+  {
+    public long Prop { get; }
+  }
+}
+
+// Internal implementation
+writer.WriteStringValue(Prop.ToString());
 ```
 
 </ClientTabItem>
+
 <ClientTabItem lang="typescript" >
 
 ```typescript
@@ -2623,8 +2695,20 @@ jsonWriter.writeStringField("prop", Objects.toString(this.value, null));
 
 </ClientTabItem>
 <ClientTabItem lang="go" >
+
 ```go
-// NOT_SUPPORTED
+type Test struct {
+    // REQUIRED
+    Prop *int64
+}
+
+// Custom MarshalJSON converts int64 to a JSON string.
+func (t Test) MarshalJSON() ([]byte, error) {
+    objectMap := make(map[string]any)
+    populate(objectMap, "prop", to.Ptr(strconv.FormatInt(*t.Prop, 10)))
+    return json.Marshal(objectMap)
+}
 ```
+
 </ClientTabItem>
 </ClientTabs>
diff --git a/website/src/content/docs/docs/howtos/Generate client libraries/10versioning.mdx b/website/src/content/docs/docs/howtos/Generate client libraries/10versioning.mdx
index aa482f3871..83c6a0c1d9 100644
--- a/website/src/content/docs/docs/howtos/Generate client libraries/10versioning.mdx	
+++ b/website/src/content/docs/docs/howtos/Generate client libraries/10versioning.mdx	
@@ -534,7 +534,43 @@ def create_user_profile(
 ```
 
 ```csharp
-// TODO
+// The C# emitter generates both operations and a ServiceVersion enum, but does not
+// emit version guards on the newly added operation.
+namespace My.Service
+{
+  public partial class UserInfo
+  {
+    public UserInfo(string username);
+    public string Username { get; }
+  }
+
+  public partial class UserProfile
+  {
+    public UserProfile(string profileName);
+    public string ProfileName { get; }
+  }
+
+  public partial class ServiceClient
+  {
+    public ServiceClient(Uri endpoint);
+    public ServiceClient(Uri endpoint, ServiceClientOptions options);
+    public virtual Response GetUserInfo(UserInfo userInfo, CancellationToken cancellationToken = default);
+    public virtual Task<Response> GetUserInfoAsync(UserInfo userInfo, CancellationToken cancellationToken = default);
+    public virtual Response CreateUserProfile(UserProfile userProfile, CancellationToken cancellationToken = default);
+    public virtual Task<Response> CreateUserProfileAsync(UserProfile userProfile, CancellationToken cancellationToken = default);
+  }
+
+  public partial class ServiceClientOptions : ClientOptions
+  {
+    public ServiceClientOptions(ServiceVersion version = ServiceVersion.V2024_02_01);
+
+    public enum ServiceVersion
+    {
+      V2024_01_01 = 1,
+      V2024_02_01 = 2
+    }
+  }
+}
 ```
 
 ```typescript
@@ -697,7 +733,37 @@ def create_user_profile(
 ```
 
 ```csharp
-// TODO
+// The C# emitter generates the new model and property as plain members; it does not
+// emit version guards or per-version conditional shapes.
+namespace My.Service
+{
+  public partial class UserInfo
+  {
+    public UserInfo(string username);
+    public string Username { get; }
+  }
+
+  public partial class UserProfile
+  {
+    public UserProfile(string profileName, ProfileDetails profileDetails);
+    public string ProfileName { get; }
+    public ProfileDetails ProfileDetails { get; }
+  }
+
+  public partial class ProfileDetails
+  {
+    public ProfileDetails(string detailDescription);
+    public string DetailDescription { get; }
+  }
+
+  public partial class ServiceClient
+  {
+    public ServiceClient(Uri endpoint);
+    public ServiceClient(Uri endpoint, ServiceClientOptions options);
+    public virtual Response GetUserInfo(UserInfo userInfo, CancellationToken cancellationToken = default);
+    public virtual Response CreateUserProfile(UserProfile userProfile, CancellationToken cancellationToken = default);
+  }
+}
 ```
 
 ```typescript