Count the keys currently available in the keypool.
Declared in <wallet/wallet.h>
[[requires_capability(0x7f94fde064d8), requires_capability(0x7f95061a9218), requires_capability(0x7f94f2b79d28), requires_capability(0x7f94f0cf89b8), requires_capability(0x7f94fee3b3a8)]]
unsigned int
GetKeyPoolSize() const;
The keypool size.