syntax_data: {"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"ty::FreshTy(_)"}]}
source_snippet:                 ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_) => true,
context_before:                 ty::IntVar(_) | ty::FloatVar(_) => true,
context_after:             },