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Description
Is your feature request related to a problem? Please describe.
This is could be considered a feature or a bug tbh.
The generated dart-dio client uses the "old" Dart style where the enum values could be in screming case.
With the latest style guide of Dart (https://dart.dev/effective-dart/style#do-name-other-identifiers-using-lowercamelcase) it is best practise to use lowerCamelCase.
Still it is not a "must do" to use lowerCamelCase for enum values but is preferred.
Describe the solution you'd like
There for I'd like to use a template option parameter to support the lowerCamelCase.