From Xojo Documentation
Read-Only Property (As Integer )
| This property 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 property on an incompatible platform.
Contains the KeychainItem reference, for use with macOS API calls.
This example gets the handle to the KeychainItem.