fn empty_val_check_suffix_from_path(&self, full_path: &str) -> Option<&str> {
match full_path {
"secp256k1::PublicKey"|"bitcoin::secp256k1::PublicKey" => Some(".is_null()"),
- "bitcoin::secp256k1::ecdsa::Signature" => Some(".is_null()"),
_ => None
}
}