Function derivative_account_id

pub fn derivative_account_id<AccountId: Encode + Decode>(
    who: AccountId,
    index: u16,
) -> AccountId

Derive a derivative account ID from the owner account and the sub-account index.

The derived account with index of who is defined as: b2b256("modlpy/utilisuba" ++ who ++ index) where index is encoded as fixed size SCALE u16, the prefix string as SCALE u8 vector and who by its canonical SCALE encoding. The resulting account ID is then decoded from the hash with trailing zero bytes in case that the AccountId type is longer than 32 bytes. Note that this could lead to collisions when using AccountId types that are shorter than 32 bytes, especially in testing environments that are using u64.