syntax_data: {"ast_node_type":"other","tokens":[{"end":35,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// different macro 2.0 macros.
context_before:     /// (e.g., `macro` item, but not `macro_rules` item) and stay different if they came from
context_after:     /// Technically, this operation strips all non-opaque marks from ident's syntactic context.