{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"#[label(mir_transform_unconditional_recursion_call_site_label)]"}]}
    #[label(mir_transform_unconditional_recursion_call_site_label)]
    pub(crate) span: Span,
    pub(crate) call_sites: Vec<Span>,