The SerializedProperty to make the custom GUI for.
Returns
bool
Whether the drawer's UI can be cached.
Description
Override this method to determine whether the inspector GUI for your property can be cached.
The default is true.
If your UI is only using EditorGUI controls, it is cacheable.
If you're using Handles, GL, or some other method to draw directly into your rect, then you should override this method and return false when your property is visible.