(4, HighZeroBytesDroppedBigSize(*cltv_expiry_height), required),
(10, *encrypted_tlvs, required_vec),
(12, intro_node_blinding_point, option),
(4, HighZeroBytesDroppedBigSize(*cltv_expiry_height), required),
(10, *encrypted_tlvs, required_vec),
(12, intro_node_blinding_point, option),