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• Have you provided a full/minimal spec to reproduce the issue?
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Description

I'm trying to use --type-mappings enum=String to force generator to use String instead of EnumClass for enums.
But there is no difference in output. May be I'm doing something wrong...

openapi-generator version

5.0.0

OpenAPI declaration file content or url

Gist with json schema
https://gist.github.com/vasilich6107/c511a8e185e4a8aac4d7112e8282fa9d

OpenAPI declaration file content or url

pubName: api
pubVersion: 1.0.0+1
pubDescription: "api"

Generation Details

java -jar openapi-generator-cli.jar generate -i api.json -g dart-dio -c config.yaml --enable-post-process-file --type-mappings enum=String

Steps to reproduce

1. Run open api generation