Update README.md

Author: wei18

README.md

@@ -7,11 +7,57 @@
 This Swift code generator is built upon the [Swift OpenAPI Generator](https://github.com/apple/swift-openapi-generator) and leverages the OpenAPI description for GitHub's REST API. The goal is to automate the creation of Swift language bindings, providing developers with a seamless way to interact with GitHub's REST API.
 
 ## Usage
-- To get started, check out the [documentation](https://wei18.github.io/github-rest-api-swift-openapi/documentation/githubrestapiswiftopenapi/)
-
-- Or refer to example: Get Users.
-https://github.com/Wei18/github-rest-api-swift-openapi/blob/46bd7a951cd6a2bda9a9d26d843d55bb12f769c3/Tests/UsersTests/UsersTests.swift#L8-L15
-
+- Example: How to get users.
+    https://github.com/Wei18/github-rest-api-swift-openapi/blob/46bd7a951cd6a2bda9a9d26d843d55bb12f769c3/Tests/UsersTests/UsersTests.swift#L8-L15
+
+- Example: Enhance issues comment API
+    ```swift
+    // Usage.swift
+    // -
+    import Foundation
+    import GitHubRestAPIIssues
+    import OpenAPIRuntime
+    import OpenAPIURLSession
+    import HTTPTypes
+    
+    struct GitHubRestAPIIssuesExtension {
+    
+        let owner: String
+    
+        let repo: String
+    
+        /// The issue number or pull number.
+        let number: Int
+    
+        /// Update the comment if the anchor is found; otherwise, create it.
+        func comment(anchor: String, body: String) async throws {
+            let hidingContent = "<!-- Comment anchor: \(anchor) -->"
+            let newBody = "\(body)\n\n\(hidingContent)"
+    
+            let client = Client(
+                serverURL: try Servers.server1(),
+                transport: URLSessionTransport(),
+                middlewares: [AuthenticationMiddleware(token: nil)]
+            )
+    
+            let comments = try await client.issues_sol_list_hyphen_comments(
+                path: .init(owner: owner, repo: repo, issue_number: number)
+            ).ok.body.json
+    
+            if let comment = comments.first(where: { $0.body?.contains(hidingContent) == true }) {
+                _ = try await client.issues_sol_update_hyphen_comment(
+                    path: .init(owner: owner, repo: repo, comment_id: Components.Parameters.comment_hyphen_id(comment.id)),
+                    body: .json(.init(body: newBody))
+                )
+            } else {
+                _ = try await client.issues_sol_create_hyphen_comment(
+                    path: .init(owner: owner, repo: repo, issue_number: number),
+                    body: .json(.init(body: newBody))
+                )
+            }
+        }
+    }
+    ```
 ## Installation
 
 ### Swift Package Manager
@@ -31,7 +77,9 @@ dependencies: [
 
 ## Overview
 
-[OpenAPI](https://www.openapis.org/) serves as a standardized way to document HTTP services. It allows developers to automate workflows, such as generating code for making HTTP requests or implementing API servers. The Swift OpenAPI Generator is a Swift package plugin designed to generate code at build-time, ensuring it remains synchronized with the OpenAPI document.
+[OpenAPI](https://www.openapis.org/) serves as a standardized way to document HTTP services. It allows developers to automate workflows, such as generating code for making HTTP requests or implementing API servers. 
+
+The [Swift OpenAPI Generator](https://github.com/apple/swift-openapi-generator) is a Swift package plugin designed to generate code at build-time, ensuring it remains synchronized with the OpenAPI document.
 
 Use [Submodules](https://git-scm.com/book/en/v2/Git-Tools-Submodules) to clone [github/rest-api-description](https://github.com/github/rest-api-description) and then split openapi tags into multiple modules (Swift Package Products).