recipient_node_id: PublicKey, entropy_source: &ES, secp_ctx: &Secp256k1<T>
) -> Result<Self, ()> {
Self::new_for_message(&[recipient_node_id], entropy_source, secp_ctx)
recipient_node_id: PublicKey, entropy_source: &ES, secp_ctx: &Secp256k1<T>
) -> Result<Self, ()> {
Self::new_for_message(&[recipient_node_id], entropy_source, secp_ctx)