ChunkDataPackRequest is an internal data structure in fetcher engine that is passed between the engine and requester module.

ChunkDataPackResponse is an internal data structure in fetcher engine that is passed between the fetcher and requester engine.

ChunkStatus is a data struct represents the current status of fetching chunk data pack for the chunk.

ReceiptDataPack represents an execution receipt with some metadata.

ResultDataPack represents an execution result with some metadata.

VerifiableChunkData represents a ready-to-verify chunk It contains the execution result as well as all resources needed to verify it.