register_post_load_file_format_upgrade_callback

omni.graph.core.register_post_load_file_format_upgrade_callback(callback: object) → int

Registers a callback to be invoked when the file format version changes. Happens after the file has already been parsed and stage attached to. The callback takes 3 parameters: the old file format version, the new file format version, and the affected graph object.

Parameters

callback (Callable) – The callback function

Returns

A handle that could be used for deregistration - note the calling module is responsible for deregistration

Return type

(int)

of the callback in all circumstances - including where the extension is hot-reloaded.