Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

openapi-generator version

4.3.1

OpenAPI declaration file content or url

https://github.com/OAI/OpenAPI-Specification/blob/master/examples/v3.0/petstore.yaml

Generation Details

I tried to generate Java client side code using microprofile library, but when I generate with that library, generated code has injected Licensed under the Apache License, Version 2.0 (the "License");.

If my understanding is correct, generated code is not under the license matters. https://github.com/OpenAPITools/openapi-generator#34---license-information-on-generated-code
And actually if I changed that library to resteasy or others, these Apache License disclaimer is not injected.

Library options are listed on here's library row: https://openapi-generator.tech/docs/generators/java/

Language: OpenJDK 11.0.7
Build Tool: Gradle 6.4.1
Generator: OpenAPI Generator Gradle Plugin 4.3.1

portion of build.gradle:

plugins {
    id 'java'
    id 'io.quarkus'
    id "org.openapi.generator" version "4.3.1"
}

repositories {
     mavenLocal()
     mavenCentral()
}

dependencies {
    implementation 'io.swagger:swagger-annotations:1.6.0'
    implementation 'org.openapitools:jackson-databind-nullable:0.2.1'
}

group 'xxxx.xxxx.xxxx'
version '1.0.0-SNAPSHOT'

compileJava {
    options.encoding = 'UTF-8'
    options.compilerArgs << '-parameters'
}

compileTestJava {
    options.encoding = 'UTF-8'
}

java {
    sourceCompatibility = JavaVersion.VERSION_11
    targetCompatibility = JavaVersion.VERSION_11
}

test {
    systemProperty "java.util.logging.manager", "org.jboss.logmanager.LogManager"
}

sourceSets.main.java.srcDir "${rootDir}/src/gen/java"

task testSpecOpenApiGenerate(type: org.openapitools.generator.gradle.plugin.tasks.GenerateTask) {
    generatorName = 'java'
    configFile = "${rootDir}/src/main/resources/external/openapi-config.json"
    inputSpec = "${rootDir}/src/main/resources/external/petstore.yaml"
    outputDir = "${rootDir}/src/gen"
}

portion of openapi-config.json:

{
    "apiPackage": "xxxx.xxxx.xxxx.external.infrastructure.xxxx.resources",
    "dateLibrary": "java8",
    "generatePom": false,
    "library": "microprofile",
    "modelPackage": "xxxx.xxxx.xxxx.external.infrastructure.xxxx.model",
    "openApiNullable": true,
    "packagesName": "xxxx.xxxx.xxxx",
    "sourceFolder": "java"
}

Steps to reproduce

0. Set the all files mentioned in the above as usual Gradle project

1. ./gradlew testSpecOpenApiGenerate

2. Check your $projectDir/src/gen/java/xxxx/xxxx/xxxx/external/xxxx/model/Pet.java

   if you specify the library option as microprofile, it will contain like this:

   /**
    * Swagger Petstore
    * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
    *
    * The version of the OpenAPI document: 1.0.0
    * 
    *
    * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
    * https://openapi-generator.tech
    * Do not edit the class manually.
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    * https://www.apache.org/licenses/LICENSE-2.0
    *
    * Unless required by applicable law or agreed to in writing, software
    * distributed under the License is distributed on an "AS IS" BASIS,
    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    * See the License for the specific language governing permissions and
    * limitations under the License.
    */
   

   Pet_microprofile.java.txt

   if you specify the library option as resteasy, it will contain like this:

   /**
    * Swagger Petstore
    * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
    *
    * The version of the OpenAPI document: 1.0.0
    * 
    *
    * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
    * https://openapi-generator.tech
    * Do not edit the class manually.
    */
   

   Pet_resteasy.java.txt

Also I've checked the other generated code like typescript-angular and jaxrs-spec with quarkus library, but there are much similar header with java with resteasy library.
So, I thought this implementation is not intended.(= to be fixed)

Related issues/PRs

N/A

Suggest a fix

I know we need to check the case of microprofile, but I'm not sure where it is.