title: Maven Generate OpenAPI JSON for SpringBoot REST Controllers
body: <p>Is there a Maven plugin which can generate an openapi.json file at build time for my SpringBoot RestControllers?</p>
  
  <p>If not a Maven plugin, is there another simple package to generate the file at build time?</p>
  
  <p>I only want the openapi.json file, I don't want Swagger UIs auto-integrated, etc.</p>