[JAVA - SpringCodegen] Bug/feature generating code with swagger annotations v3

Description

In Spring Boot 2.1.6 project we use SpringCodegen and openapi-generator-maven-plugin to generate DTOs and interfaces for controllers from yaml-file with openapi 3.0.0. Generated files contains swagger annotations from package "io.swagger.annotations", although expected annotations from package "io.swagger.v3.oas.annotations", because in source yaml-file used openapi v3. Generated classes works fine, but we cannot later generate swagger documentation with specification v3 from that classes. Only v2. We want to control, that output documentation is the same version 3, like in input yaml-file, to exclude override errors in our code. To generate swagger documentation from java-classes we use another component, that needs swagger annotations v3. Please tell me how can I fix this problem: edit templates or maybe a ready-made solution already exists?

openapi-generator version

4.0.2

OpenAPI declaration file content or url

Command line used for generation

Steps to reproduce

Related issues/PRs

Suggest a fix/enhancement

Start by reproducing the SpringCodegen output with openapi-generator-maven-plugin 4.0.2 using an OpenAPI 3.0.0 YAML specification, then trace the generator's annotation selection and template path. Done means generated DTOs and controller interfaces use io.swagger.v3.oas.annotations rather than io.swagger.annotations, while preserving the requested OpenAPI version.