Function encode_rlp_list_payload 

pub fn encode_rlp_list_payload(
    payload: &[u8],
    limits: DecodeLimits,
    output: &mut [u8],
) -> Result<usize, DecodeError>

Canonically encodes a list payload into output.

The payload must already contain the concatenated encoded child items. output is not modified unless this function returns Ok. Returns the number of bytes written.