{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"DefUse::Def"}]}
                DefUse::Def => &mut self.local_use_map.first_def_at[local],
            let first_appearance = match def_use {
                DefUse::Use => &mut self.local_use_map.first_use_at[local],