syntax_data: {"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"MacroKind::Bang"}]}
source_snippet:                 MacroKind::Bang => format!("{name}!"),
context_before:             ExpnKind::Macro(macro_kind, name) => match macro_kind {
context_after:                 MacroKind::Attr => format!("#[{name}]"),