[JAVA] codegen not generating OAuth2 password flow

Description

I used the code generator to create a client library for my API, using an OpenAPI 2.0 Swagger json.

The swagger has both securityDefinitions and security objects specified, but no OAuth token refresh flow was produced. As far as I can tell, the generated APIClient requires a fresh token to be provided externally.

Do I need to manually code the logic for refreshing the OAuth token?

  "securityDefinitions": {
    "oAuth2Password": {
      "type": "oauth2",
      "flow": "password",
      "tokenUrl": "https://api.buildingos.com/o/token/",
      "scopes": {}
    },
  "security": [
    {
      "oAuth2Password": []
    }
  ]

Swagger-codegen version

2.3.1

Swagger declaration file content or url

https://gist.github.com/JurisPuchin/7f1e4208dae61bbcb54694b355dd5a38

Command line used for generation

java -jar swagger-codegen-cli-2.3.1.jar generate -i original_raw_oauth_resp3.json -l java -o oath_test8

Reproduce the report with swagger-codegen-cli 2.3.1, the linked Swagger declaration, and the shown Java generation command. Inspect the generated APIClient and the Java code-generation templates to determine whether the OAuth2 password flow is represented; done means either generating the expected password-flow handling or documenting that token refresh remains external.