e BIP 32 derivation paths for public keys if we know them
5. finalize       (boolean, optional, default=true) Also finalize inputs if possible

Result:
{                             (json object)
  "psbt" : "str",             (string) The base64-encoded partially signed transaction
  "complete" : true|false,    (boolean) If the transaction has a complete set of signatures
  "hex" : "hex"               (string, optional) The hex-encoded network transaction if complete
}

Examples:
> bitcoin-cli walletprocess