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CloneableFile or Raw Data
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DeltaTraceDB internally manages data using a JSON-serializable Map (Dict),
but you can also pass a class that inherits CloneableFile directly as data.

CloneableFile is an abstract class found in the following package:

Dart version: `[https://pub.dev/packages/file_state_manager] <https://pub.dev/packages/file_state_manager>`__

Python version: `[https://pypi.org/project/file-state-manager] <https://pypi.org/project/file-state-manager/>`__

Unless there are specific issues, I recommend using a data class that inherits CloneableFile,
especially on the front end.