Cell representation computation is obscure

[AntonMeep]

At the moment Cell.representation() is implemented similarly to tonweb, however it is not clear what this implementation is based on.
According to the almighty tblkch.pdf, 1.1.3, CellRepr consists of following:

1. Two descriptor bytes
2. Data bytes, with optional padding when length of the cell is not divisible by 8
3. References to other cells, where each reference is the Sha256 hash of that referenced cell

However, tonweb and ton-kotlin at the moment also add reference cells' maxDepth encoded as 16-bit integer between 2. and 3.; it might be somehow connected to 5.3.6 but I am not quite sure.

To clear things up, it is necessary to either try and find better description in tblkch.pdf or a piece of code that implements this behaviour in the main TON repository.