// Test with EnumMap for better performance
        java.util.EnumMap<CrawlerStatus, String> enumMap = new java.util.EnumMap<>(CrawlerStatus.class);
        enumMap.put(CrawlerStatus.INITIALIZING, "Init");
        enumMap.put(CrawlerStatus.RUNNING, "Run");
        enumMap.put(CrawlerStatus.DONE, "Done");

        assertEquals(3, enumMap.size());
        assertTrue(enumMap.containsKey(CrawlerStatus.INITIALIZING));