private Cache createCache() {
    // Setting MCAST port explicitly is currently required due to default properties set in gradle
    return new CacheFactory().set(ConfigurationProperties.MCAST_PORT, "0").create();
  }
Returns true if the files of the given oplog file are in the
given directory.
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/DiskStoreImplIntegrationTest.java