syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"map:"}]}
source_snippet:     map: FxHashMap<GenericArg<'tcx>, GenericArg<'tcx>>,
context_before:     tcx: TyCtxt<'tcx>,
context_after:     /// see call sites to fold_kind_no_missing_regions_error