code: public static boolean containsAny(final CharSequence cs, final CharSequence searchChars) {
          if (searchChars == null) {
              return false;
          }
          return containsAny(cs, CharSequenceUtils.toCharArray(searchChars));
      }
docs: <p>
  Checks if the CharSequence contains any character in the given set of characters.
  </p>
  
  <p>
  A {@code null} CharSequence will return {@code false}. A {@code null} search CharSequence will return
  {@code false}.
  </p>
  
  <pre>
  StringUtils.containsAny(null, *)               = false
  StringUtils.containsAny("", *)                 = false
  StringUtils.containsAny(*, null)               = false
  StringUtils.containsAny(*, "")                 = false
  StringUtils.containsAny("zzabyycdxx", "za")    = true
  StringUtils.containsAny("zzabyycdxx", "by")    = true
  StringUtils.containsAny("zzabyycdxx", "zy")    = true
  StringUtils.containsAny("zzabyycdxx", "\tx")   = true
  StringUtils.containsAny("zzabyycdxx", "$.#yF") = true
  StringUtils.containsAny("aba","z")             = false
  </pre>
  
  @param cs
  the CharSequence to check, may be null
  @param searchChars
  the chars to search for, may be null
  @return the {@code true} if any of the chars are found, {@code false} if no match or null input
  @since 2.4
  @since 3.0 Changed signature from containsAny(String, String) to containsAny(CharSequence, CharSequence)