{"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"self"}]}
    self as ast, AngleBracketedArg, AngleBracketedArgs, AnonConst, AssocItemConstraint,
use rustc_ast::{
    AssocItemConstraintKind, BlockCheckMode, GenericArg, GenericArgs, Generics, ParenthesizedArgs,