}
              }));
    }

    /*
     * It's unlikely that any operations would fail by throwing an exception, but let's check them
     * just to be safe.
     *
     * The real purpose of this test is to produce a TSAN failure if MapIteratorCache is unsafe for
     * reads from multiple threads -- unsafe, in fact, even in the absence of a concurrent write.

                }
              }));
    }

    /*
     * It's unlikely that any operations would fail by throwing an exception, but let's check them
     * just to be safe.
     *
     * The real purpose of this test is to produce a TSAN failure if MapIteratorCache is unsafe for
     * reads from multiple threads -- unsafe, in fact, even in the absence of a concurrent write.