{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"self"}]}
    self as ast, AnonConst, AttrArgs, BindingMode, ByRef, DelimArgs, EnumDef, Expr, GenericArg,
use rustc_ast::{
    GenericParamKind, Generics, Mutability, PatKind, Safety, VariantData,