https://www.youtube.com/watch?v=wBDSR0x3GZo&list=PLrA5ciulugn_pHHuEjyWIuyLT20r5QzWZ&index=2&t=0s
https://idratherbewriting.com/learnapidoc/openapi_tutorial.html
https://medium.com/@amirm.lavasani/restful-apis-tutorial-of-openapi-specification-eeada0e3901d
Code Gen
https://mux.com/blog/an-adventure-in-openapi-v3-api-code-generation/
https://github.com/Mermade/openapi-codegen/tree/master/templates