Description

The inheritance is not working, the inherited attributes are not included in the generated files. (E.g. GetProofingConfigDto misses all ProofingConfigDto attriubtes)

Additionally, the generator warns about Objects, which SwaggerCodegen did not:
[main] WARN o.o.codegen.DefaultCodegen - Unknown type found in the schema: object

openapi-generator version

3.0.2

OpenAPI declaration file content or url

https://github.com/janssen92/swagger-feedback-service-api/blob/testOpenApiGenerator/swagger-feedback.json
https://github.com/janssen92/swagger-feedback-service-api/blob/testOpenApiGenerator/swagger-feedback-conf.json

Command line used for generation

java -jar ~/git/openapi-generator/modules/openapi-generator-cli/target/openapi-generator-cli.jar generate -i swagger-feedback.json -g spring -o ~/testOpenApiGen --library spring-boot --config swagger-feedback-conf.json
But also same result with less parameters:
java -jar ~/git/openapi-generator/modules/openapi-generator-cli/target/openapi-generator-cli.jar generate -i swagger-feedback.json -g spring -o ~/testOpenApiGen

Steps to reproduce

• Checkout file(s)
• Generate Code