{"ast_node_type":"variable","tokens":[{"end":70,"kind":"keyword","start":0,"text":"let"}]}
        let allocator = self.cx.path_ident(self.ty_span, self.global);
        let method = self.cx.expr_path(self.cx.path(self.ty_span, method));
        let allocator = self.cx.expr_path(allocator);