Function C_GenerateKey 

#[unsafe(no_mangle)]
pub extern "C" fn C_GenerateKey(
    hSession: CK_SESSION_HANDLE,
    pMechanism: CK_MECHANISM_PTR,
    pTemplate: CK_ATTRIBUTE_PTR,
    ulCount: CK_ULONG,
    phKey: CK_OBJECT_HANDLE_PTR,
) -> CK_RV