syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // which case the name should mention the non-identifier punctuation.
context_before:     // The symbol is the stringified identifier unless otherwise specified, in
context_after:     // E.g. `sym::proc_dash_macro` represents "proc-macro", and it shouldn't be