50     unlock(id);  // Should fail.  in simpleTests()
53     unlock(id);  in simpleTests()
54     unlock(id);  // Should fail.  in simpleTests()
58     unlock(id);  in simpleTests()
59     unlock(id);  in simpleTests()
60     unlock(id);  // Should fail.  in simpleTests()
68     unlock(id);  in simpleTests()
69     unlock(id);  // Should fail.  in simpleTests()
74     unlock(id);  in simpleTests()
75     unlock(id);  // Should fail.  in simpleTests()
80     unlock(id);  in simpleTests()
81     unlock(id);  // Should fail.  in simpleTests()
98         unlock(id);  in threadTests()
120     unlock(id);  in threadTests()
135     unlock(id);  in threadTests()
220   private static void unlock(long id) {  in unlock()  method in Test923