{"ast_node_type":"impl","tokens":[{"end":98,"kind":"keyword","start":0,"text":"///"}]}
    /// impl Trait`): this creates the associated Opaque Type (TAIT) definition and then returns a
    /// Lowers a `ReturnPositionOpaqueTy` (`-> impl Trait`) or a `TypeAliasesOpaqueTy` (`type F =
    /// HIR type that references the TAIT.