{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"self,"}]}
    self, BoundVarReplacerDelegate, ConstVid, FloatVid, GenericArg, GenericArgKind, GenericArgs,
use rustc_middle::ty::{
    GenericArgsRef, GenericParamDefKind, InferConst, IntVid, OpaqueHiddenType, OpaqueTypeKey,