Some MAPDL commands are not defined in the generated module (pyconverter-generatedcommand) but are well defined outside of it when adding it to the PyMAPDL package.
It is the case with FILE: it is not defined in _commands (= generated module) but it in mapdl-grpc.py.
Adding an option in the configuration to add "manual" references in the _commands submodule would fix this issue:
commands_already_defined:
- "INITIAL_MAPDL_COMMAND": "python_name"
- "FILE": "file"