Function apply_persistent_tool_intent 

pub fn apply_persistent_tool_intent<S>(
    editor: &mut CanvasEditor,
    store: &mut S,
    cursor: &mut CanvasPersistenceCursor,
    intent: CanvasToolIntent,
) -> Result<(), CanvasPersistenceError<S::Error>>
where
    S: CanvasPersistenceStore,