ignoreAnyOfInEnum flag is not working properly.

[janankit20]

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/Java enums are not generated correctly with anyOf #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/[REQ][Java] support anyOf Enum #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