The Snapshot method in the UndoSystem class is marked as obsolete. It was originally intended to create a snapshot of the current state, which could be used for undo operations. However, automatic snapshotting is no longer supported. If you need to use snapshotting for undo functionality, you should manually create and restore snapshots within the undo/redo actions provided to the UndoSystem.Insert method.
To use the Snapshot method, you would typically pass a string parameter changeTitle that describes the change being snapshotted. However, since this method is obsolete, it is recommended to avoid using it and instead manage snapshots manually through the UndoSystem.Insert method.
// Example of how the Snapshot method might have been used
// Note: This method is obsolete and should not be used in new code.
UndoSystem undoSystem = new UndoSystem();
undoSystem.Snapshot("Change Title");
// Recommended approach:
// Use UndoSystem.Insert to manually manage undo/redo actions
undoSystem.Insert("Change Title",
undo: () => { /* Code to undo the change */ },
redo: () => { /* Code to redo the change */ });