syntax_data: {"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"ty::Alias(..)"}]}
source_snippet:             ty::Alias(..) | ty::Param(_) | ty::Bound(..) | ty::Placeholder(_) | ty::Infer(_) => {
context_before:             // called for known, fully-monomorphized types.
context_after:                 false