syntax_data: {"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"ExpnKind::Macro(macro_kind,"}]}
source_snippet:             ExpnKind::Macro(macro_kind, name) => match macro_kind {
context_before:             ExpnKind::Root => kw::PathRoot.to_string(),
context_after:                 MacroKind::Bang => format!("{name}!"),