[PYTHON][5.0.0beta2] Customization from config file, new supporting files not generated

Description

I am interested in the functionality described in Customization with the 5.0.0 version where we can specify additional files to be generated through a configuration file.

I tried to generate a python-flask server with two additional files : Author.md and python-logging.mustache. But they don't seem to be generated.

Either I am missing something or this is not yet available.

openapi-generator version

openapi-generator 5.0.0beta2

Files used

The configuration files used

templateDir: custom_template
additionalProperties:
  debugSupportingFiles: true
  packageName: python_com
  packageVersion: 1.0.1
  serverPort: 9090
files:
  Author.md : {}
  python-logging.mustache:
    folder: addon
    destinationFilename: python-logging.py
    templateType: SupportingFiles

Folder architecture

.
├── config.yaml
├── custom_template
│   ├── Author.md
│   └── python-logging.mustache
└── folder_archi

1 directory, 4 files
  

Command line used for generation

As for the command line used to generate the python-flask server.

 java -jar path/to/openapi-generator-cli-5.0.0-beta2.jar generate -g python-flask -i path/to/petstore.yaml -o outdir -c config.yaml 

Reproduce the reported generation using config.yaml, custom_template/Author.md, custom_template/python-logging.mustache, and the shown openapi-generator CLI command. Compare the generated output with the requested Author.md and addon/python-logging.py files; the issue is done when both supporting files are generated according to the configuration.