syntax_data: {"ast_node_type":"other","tokens":[{"end":34,"kind":"keyword","start":0,"text":"TypeVisitableExt,"}]}
source_snippet:     TypeVisitableExt, TypeVisitor,
context_before:     self, GenericArgsRef, Term, TermKind, Ty, TyCtxt, TypeSuperVisitable, TypeVisitable,
context_after: };