The wallet descriptor backing this spkm.
Declared in <wallet/scriptpubkeyman.h>
[[guarded_by(0x7f94fd518e58), guarded_by(0x7f95058b8ff8), guarded_by(0x7f94f1e43db8), guarded_by(0x7f9505cb2ad8), guarded_by(0x7f94f23e42d8), guarded_by(0x7f94fd840a18)]]
WalletDescriptor m_wallet_descriptor;