openapi-generator

Bug Report Checklist

• [~] Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator, yes I used the validate function of the api generator
• [5.0.0 ] What's the version of OpenAPI Generator used?
• Have you search for related issues/PRs?
• What's the actual output vs expected output?

Describe the bug
Authentication not working with oauth2.
To Reproduce
Trying to implement oauth2 according to swagger documentation.

security: {
    BearerAuth: {
      type: "oauth2",
      scheme: "bearer",
    },
  }

Does not work unfortunately. Also, I can not add scope and token URL information.
Expected behavior
I want to be able to add OAuth2 authentication

I would like to be able to inspect the Looker API response data to better understand the type of error I have got when performing an action. Knowing that information I can then go on to perform a different set of actions after the error.

For example the create_user can have a variety of [responses](https://docs.looker.com/reference/api-and-integration/api-reference/v3.1/user#response_messages