syntax_data: {"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"AliasTermKind::OpaqueTy"}]}
source_snippet:             AliasTermKind::OpaqueTy => "opaque type",
context_before:             AliasTermKind::InherentConst => "inherent associated const",
context_after:             AliasTermKind::FreeTy => "type alias",