static Map newMap(Class cl) {
    try {
      Map m = (Map) cl.newInstance();
      return m;
    } catch (Exception e) {
      throw new RuntimeException("Can't instantiate " + cl + ": " + e);
    }
  }
@test
@synopsis Times and checks basic map operations
geode-core/src/integrationTest/java/org/apache/geode/internal/util/concurrent/cm/MapCheckJUnitTest.java