public XMLString append(char[] ch, int offset, int len) { ensureCapacity(length_ + len); System.arraycopy(ch, offset, value_, length_, len); length_ += len;
public final XMLString append(String str) { append(str.toCharArray());
	public XMLString append(char[] ch, int offset, int len) {		ensureCapacity(length_ + len);		System.arraycopy(ch, offset, value_, length_, len);		length_ += len;		return this;	}