Why is SpecAugmentTimeMaskComponent saved in the model?

I recently used a model trained by Kaldi to convert it to ONNX format, but found that SpecAugmentTimeMaskComponent does not have a corresponding format in ONNX.
Shouldn't this component be used for data enhancement, and why is it in the model file?

Start with the issue's description of SpecAugmentTimeMaskComponent, Kaldi model files, and ONNX conversion. Determine whether the component is expected to be serialized in the model and whether the ONNX conversion path handles it; done means the behavior is explained and any required conversion or documentation change is covered by a reproducible check.

Written by the indexing model from the issue text.