ignoreAnyOfInEnum flag is not working properly.

3GPP R15 has defined a set of standards in the form of OpenAPI Yamls.
This yamls contains enum along with AnyOf.

Currently open api generator is not generating models correctly for ENUM along with AnyOF

RequestTrigger:
  anyOf:
  - type: string
    enum:
      - LOC_CH
      - PRA_CH
      - SERV_AREA_CH
      - RFSP_CH
      - ALLOWED_NSSAI_CH
      - UE_AMBR_CH

I checked it on internet and found out two solution :

1. [https://github.com/OpenAPITools/openapi-generator/issues/798]
   Where we can delete anyof and run the maven build again.
   But we cannot change the YAML , as its of standard.

2. [https://github.com/OpenAPITools/openapi-generator/issues/4491]
   Here I see, Jason submitted some code where he added new configuration ignoreAnyOfInEnum ( and making its use in AbstractJavaCodeGen Class ) to ignore the AnyOf Tag.

   But This flag is also not working.
   Seems reasons for that is , ignoreAnyOfInEnum config is not getting set in GeneratorSettings.java like other config properties we do.

Please help , stuck.

@wing328

Start by tracing ignoreAnyOfInEnum from AbstractJavaCodeGen into GeneratorSettings.java, using the reported RequestTrigger OpenAPI YAML as the reproduction case. Check the Maven build and generated models to verify that enabling the flag changes enum-plus-anyOf handling without requiring edits to the standard YAML.