The wallet descriptor backing this spkm.
Declared in <wallet/scriptpubkeyman.h>
[[guarded_by(0x7ff371803808), guarded_by(0x7ff365630c68), guarded_by(0x7ff35d3507e8), guarded_by(0x7ff365aaa758), guarded_by(0x7ff379b45b68), guarded_by(0x7ff37e1e2218)]]
WalletDescriptor m_wallet_descriptor;