Java generators: use codegen fields in mustable

samples/openapi3/client/petstore/spring-cloud-3/README.md

@@ -1,26 +1,53 @@
-# OpenAPI generated API stub
+# spring-cloud-oas3
 
-Spring Framework stub
+## Requirements
 
+Building the API client library requires [Maven](https://maven.apache.org/) to be installed.
 
-## Overview
-This code was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
-By using the [OpenAPI-Spec](https://openapis.org), you can easily generate an API stub.
-This is an example of building API stub interfaces in Java using the Spring framework.
+## Installation
 
-The stubs generated can be used in your existing Spring-MVC or Spring-Boot application to create controller endpoints
-by adding ```@Controller``` classes that implement the interface. Eg:
-```java
-@Controller
-public class PetController implements PetApi {
-// implement all PetApi methods
-}
+To install the API client library to your local Maven repository, simply execute:
+
+```shell
+mvn install
+```
+
+To deploy it to a remote Maven repository instead, configure the settings of the repository and execute:
+
+```shell
+mvn deploy
 ```
 
-You can also use the interface to create [Spring-Cloud Feign clients](http://projects.spring.io/spring-cloud/spring-cloud.html#spring-cloud-feign-inheritance).Eg:
-```java
-@FeignClient(name="pet", url="http://petstore.swagger.io/v2")
-public interface PetClient extends PetApi {
+Refer to the [official documentation](https://maven.apache.org/plugins/maven-deploy-plugin/usage.html) for more information.
 
-}
+### Maven users
+
+Add this dependency to your project's POM:
+
+```xml
+<dependency>
+    <groupId>org.openapitools.openapi3</groupId>
+    <artifactId>spring-cloud-oas3</artifactId>
+    <version>1.0.0</version>
+    <scope>compile</scope>
+</dependency>
 ```
+
+### Gradle users
+
+Add this dependency to your project's build file:
+
+```groovy
+compile "org.openapitools.openapi3:spring-cloud-oas3:1.0.0"
+```
+
+### Others
+
+At first generate the JAR by executing:
+
+mvn package
+
+Then manually install the following JARs:
+
+* target/spring-cloud-oas3-1.0.0.jar
+* target/lib/*.jar