descriptorBase64Utf8OrNull
Produces the descriptor using the Base64 encoding of the key in the form of {onion address without .onion}:descriptor:{algorithm}:{base64 encoded key} as UTF-8 bytes, or null if either the address is not compatible with this algorithm, or isDestroyed is true.
See also
Produces the descriptor using the Base64 encoding of the key in the form of {onion address without .onion}:descriptor:{algorithm}:{base64 encoded key} as UTF-8 bytes, or null if either the publicKey is not compatible with this algorithm, or isDestroyed is true.