{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"BuiltInEager(AstId<ast::Macro>,"}]}
    BuiltInEager(AstId<ast::Macro>, EagerExpander),
    BuiltInDerive(AstId<ast::Macro>, BuiltinDeriveExpander),
    ProcMacro(AstId<ast::Fn>, CustomProcMacroExpander, ProcMacroKind),