syntax_data: {"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":".map_or(Res::Err,"}]}
source_snippet:                 .map_or(Res::Err, |(kind, def_id)| Res::Def(kind, def_id)),
context_before:                 .type_dependent_def(id)
context_after:         }