public static InternalLogger getInstance(Class<?> clazz) {
        return getInstance(clazz.getName());
    }
@Test
    public void testIsWarnEnabled() {
        when(mockLogger.isWarnEnabled()).thenReturn(true);

        InternalLogger logger = InternalLoggerFactory.getInstance("mock");
        assertTrue(logger.isWarnEnabled());
        verify(mockLogger).isWarnEnabled();
    }