syntax_data: {"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// provide a single error per unique incorrect identifier.
context_before:     /// should be. Useful to avoid bad tokenization when encountering emoji. We group them to
context_after:     pub bad_unicode_identifiers: Lock<FxIndexMap<Symbol, Vec<Span>>>,