{"ast_node_type":"import","tokens":[{"end":72,"kind":"keyword","start":0,"text":"///"}]}
    /// Error E0735: generic parameters with a default cannot use `Self`
    ParamInEnumDiscriminant { name: Symbol, param_kind: ParamKindInEnumDiscriminant },
    ForwardDeclaredSelf(ForwardGenericParamBanReason),