> ## Documentation Index
> Fetch the complete documentation index at: https://fdm.furkankursav.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Entry Source Interface
### BPI\_FDM\_EntrySourceObject (Blueprint Interface)
Every object you add to the menu must implement this interface.
When you add your object to FDM, the **OnEntryAdded** interface function gets called.
when the entry is selected, the **OnEntrySelected** interface function gets called.
when the entry is unselected, the **OnEntryUnselected** interface function gets called
when the entry is removed from the FDM, the **OnEntryRemoved** interface function gets called.
and we have a function for debugging: **GetEntryDebugName**
and the most important interface function is **Get Entry Metadata**
