whole_func_string: function repeat(times) {
      return function* (it) {
          const buffer = [];
          for (const item of it) {
              buffer.push(item);
              yield item;
          }
          for (let i = 0; i < times; ++i) {
              yield* buffer;
          }
      };
  }
func_code_string: function repeat(times) {
      return function* (it) {
          const buffer = [];
          for (const item of it) {
              buffer.push(item);
              yield item;
          }
          for (let i = 0; i < times; ++i) {
              yield* buffer;
          }
      };
  }
func_documentation_string: Play the given Iterable, and then it N more times