{"ast_node_type":"other","tokens":[{"end":39,"kind":"keyword","start":0,"text":"ItemKind::Use(UseTree"}]}
                ItemKind::Use(UseTree {
                thin_vec![self.cx.attr_nested_word(sym::allow, sym::unused_imports, self.span)],
                    prefix: self.cx.path(self.span, self.cx.std_path(&[sym::asserting])),