unable to initialize class object to change password

[pratap511]

i'm inable to initialize this class. Please help me on below snippet

            EncryptedStore *store = ******

            if([store checkAndChangeDatabasePassphrase:@"1234" toNewPassphrase:@"5678" error:nil]) {
                NSLog(@"Changed Password");
            }

[dankito]

if let encryptedStore = persistentContainer.persistentStoreCoordinator.persistentStores.compactMap { $0 as? EncryptedStore }.first {
     try? encryptedStore.checkAndChangeDatabasePassphrase("1234", toNewPassphrase: "5678")
}