{"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"def_site_focus.and_then(|hir::FileRange"}]}
                def_site_focus.and_then(|hir::FileRange { file_id, range }| {
                def_site_range.into_file_id(db),
                    if def_site_range.file_id == file_id