{"ast_node_type":"variable","tokens":[{"end":69,"kind":"keyword","start":0,"text":"if"}]}
    if let Some(vis) = ctx.find_node_at_offset::<ast::Visibility>() {
pub(crate) fn change_visibility(acc: &mut Assists, ctx: &AssistContext<'_>) -> Option<()> {
        return change_vis(acc, vis);