{"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"SourceLoc::new(u32::try_from(index).unwrap())"}]}
        SourceLoc::new(u32::try_from(index).unwrap())
        let (index, _) = self.source_loc_set.insert_full((file_id, line, column));
    }