code: public void ignorableWhitespace(String text) throws IOException {
  		if (startTagIncomplete || setPrefixCalled || seenBracket)
  			closeStartTag();
  		if (doIndent && seenTag)
  			seenTag = false;
  		if (text.length() == 0) {
  			throw new IllegalArgumentException("empty string is not allowed for ignorable whitespace" + getLocation());
  		}
  		out.write(text); // no escape?
  	}
docs: Ignorable whitespace.
  
  @param text the text
  @throws IOException Signals that an I/O exception has occurred.