@BeforeClass
  public static void setUp() {
    cache = new CacheFactory().set(MCAST_PORT, "0").create();
    RegionFactory<Object, String> factory = cache.createRegionFactory(RegionShortcut.PARTITION);
    Region<Object, String> region1 = factory.create(PARTITIONED_REGION);

    region1.put(new StringCheese("key_1"), "value_1");
    region1.put("key_2", "value_2");
  }
TODO: Add additional tests for all methods in DataCommandFunction.
geode-gfsh/src/integrationTest/java/org/apache/geode/management/internal/cli/functions/DataCommandFunctionJUnitTest.java