code: public static boolean containsAny(String str, String searchChars) {
        if (searchChars == null) {
            return false;
        }
        return containsAny(str, searchChars.toCharArray());
    }
docs: <p>
  Checks if the String contains any character in the given set of characters.
  </p>
  
  <p>
  A <code>null</code> String will return <code>false</code>. A <code>null</code> search string will return
  <code>false</code>.
  </p>
  
  <pre>
  GosuStringUtil.containsAny(null, *)            = false
  GosuStringUtil.containsAny("", *)              = false
  GosuStringUtil.containsAny(*, null)            = false
  GosuStringUtil.containsAny(*, "")              = false
  GosuStringUtil.containsAny("zzabyycdxx", "za") = true
  GosuStringUtil.containsAny("zzabyycdxx", "by") = true
  GosuStringUtil.containsAny("aba","z")          = false
  </pre>
  
  @param str
  the String to check, may be null
  @param searchChars
  the chars to search for, may be null
  @return the <code>true</code> if any of the chars are found, <code>false</code> if no match or null input
  @since 2.4