{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"self"}]}
    self as ast, BinOpKind, BlockCheckMode, FormatAlignment, FormatArgPosition, FormatArgsPiece,
use rustc_ast::{
    FormatCount, FormatDebugHex, FormatSign, FormatTrait, YieldKind, token,