}
fn encode_parent_pair(pair: &(hemera::Hash, hemera::Hash)) -> [u8; 2 * hemera::OUTPUT_BYTES] {
let mut data = [0; 2 * hemera::OUTPUT_BYTES];
let (left, right) = data.split_at_mut(hemera::OUTPUT_BYTES);
left.copy_from_slice(pair.0.as_bytes());
right.copy_from_slice(pair.1.as_bytes());
data
}
}