javacpp-pytorh ChunkMapDataset ChunkMapTensorDataset the self [ transform function] and ChunkBatchSharedBatchDataset [map] func how to implement

[mullerhai]

HI
in stroch project ,we have implement all javacpp-pytorch dataset and dataloader generate subclass, but ChunkMapDataset ChunkMapTensorDataset these two class have transform function but can not rewrite the function implement code because not know the inner logic ,could you give us the example for these two class transform function inner code implement to generate ExampleStack TensorExampleStack,
and ChunkBatchSharedBatchDataset ChunkBatchSharedTensorBatchDataset these two class have [map function] but also not rewrite the function implement code because not know the inner logic ,could you give us the example for these two class map function inner code to generate TensorExampleStack ExampleStack .
thanks