whole_func_string: function last(iterable) {
      let last = undefined;
      for (const item of iterable) {
          last = item;
      }
      return last;
  }
func_code_string: function last(iterable) {
      let last = undefined;
      for (const item of iterable) {
          last = item;
      }
      return last;
  }
func_documentation_string: Take only the last item in an iterable sequence