From Xojo Documentation
| This method is only available on the macOS platform.
For cross-platform compatibility, use ＃If...＃Endif with the Target... specifiers to make sure you will not attempt to use this method on an incompatible platform.
Removes the KeychainItem.
You can change passwords in a Keychain by deleting the original item using this method and adding another item.
This example removes the current keychainitem stored in the variable kci.