StringUtils { @Deprecated public static String removeIllegalOpentsdbChars(String input) { if (input == null) return null; return input.replaceAll(ILLEGAL_CHARS, "_"); }  static void checkMetricName(MetricName name); static void checkTagValue(String tagValue); @Deprecated static String removeIllegalOpentsdbChars(String input); static boolean equals(String s1, String s2); static boolean isNotBlank(String s); static boolean isBlank(String s);  }
@Test public void testRemoveIllegalOpentsdbChars(){ Assert.assertNull(StringUtils.removeIllegalOpentsdbChars(null)); }