{"ast_node_type":"function","tokens":[{"end":95,"kind":"keyword","start":0,"text":"pub"}]}
    pub fn eval_target_usize(self, tcx: TyCtxt<'tcx>, typing_env: ty::TypingEnv<'tcx>) -> u64 {
    /// Panics if the value cannot be evaluated or doesn't contain a valid `usize`.
        self.try_eval_target_usize(tcx, typing_env)