{"ast_node_type":"other","tokens":[{"end":39,"kind":"keyword","start":0,"text":"fixup::{self,"}]}
    fixup::{self, SyntaxFixupUndoInfo},
    declarative::DeclarativeMacroExpander,
    hygiene::{span_with_call_site_ctxt, span_with_def_site_ctxt, span_with_mixed_site_ctxt},