code: public static boolean containsAny (@Nullable final String sInput, @Nonnull final char [] aSearchChars)
    {
      return sInput != null && containsAny (sInput.toCharArray (), aSearchChars);
    }
docs: Check if any of the passed searched characters in contained in the input
  string.
  
  @param sInput
  The input string. May be <code>null</code>.
  @param aSearchChars
  The char array to search. May not be <code>null</code>.
  @return <code>true</code> if at least any of the search char is contained in
  the input char array, <code>false</code> otherwise.