code: public static boolean containsAny (@Nullable final char [] aInput, @Nonnull final char [] aSearchChars)
    {
      ValueEnforcer.notNull (aSearchChars, "SearchChars");
  
      if (aInput != null)
        for (final char cIn : aInput)
          if (ArrayHelper.contains (aSearchChars, cIn))
            return true;
      return false;
    }
docs: Check if any of the passed searched characters is contained in the input char
  array.
  
  @param aInput
  The input char array. 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.