Designing APIs with Swagger and OpenAPI

The book is 100% focused on Reactor pattern and neglects Proactor pattern frameworks like Flask(python) and Springboot(Java). These other frameworks bind the API rules at the controller.Additionally, OpenAPI/Swagger for API Rules do not address RBAC/ABAC which are necessary for security as addresed by OWASP API top10. This is not addressed anywhere within the book. It should at least be addressed as how to add in this functionality to secure your API'sThere is alot that is missing leaving this book incomplete and a one-sided description of api rules.