{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"MissingLifetimes"}]}
            MissingLifetimes { num_missing_args } => num_provided_args + num_missing_args,
        match self.gen_args_info {
            ExcessLifetimes { num_redundant_args } => num_provided_args - num_redundant_args,