Count the keys currently available in the keypool.
Declared in <wallet/wallet.h>
[[requires_capability(0x7ff3720f0e88), requires_capability(0x7ff365f20e88), requires_capability(0x7ff35de5f838), requires_capability(0x7ff35efe4318), requires_capability(0x7ff366fd08f8)]]
unsigned int
GetKeyPoolSize() const;
The keypool size.