[BUG] [Java] Invalid code generation for oneof types.

[Bethibande]

Fixes #18517, Gradle builds work again using the test file: https://gist.github.com/Bethibande/c97b0b64e3dc284c056c02fbf3778a9b

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[wing328]

thanks for the PR.

can you please add a test model (oneOf with map as sub schema) in modules/openapi-generator/src/test/resources/3_0/java/petstore-with-fake-endpoints-models-for-testing-okhttp-gson.yaml?

[Bethibande]

Going to add the unit-tests later.
EDIT: Never mind, just found out the sample Test classes are all empty.

[wing328]

when you've time, can you please add a unit test or 2 in https://github.com/OpenAPITools/openapi-generator/blob/c80075bc2ee24634a5124a52d3088d11b6b13719/samples/client/petstore/java/okhttp-gson/src/test/java/org/openapitools/client/JSONTest.java ? (which contains many examples on unit testing the models)

[wing328]

https://github.com/OpenAPITools/openapi-generator/actions/runs/8920607680/job/24599035459?pr=18544

please update the samples and add new files

[wing328]

thanks for the PR, which has been merged.

https://github.com/OpenAPITools/openapi-generator/actions/runs/9016604828/job/24773787312 fixed via eec30f2