jodd-http/src/main/java/jodd/http/Buffer.java
public Buffer append(final Buffer buffer) {
		if (buffer.list.isEmpty()) {
			// nothing to append
			return buffer;
		}
		list.addAll(buffer.list);
		last = buffer.last;
		size += buffer.size;
		return this;
	}
public Buffer append(final Buffer buffer) {
		if (buffer.list.isEmpty()) {
			// nothing to append
			return buffer;
		}
		list.addAll(buffer.list);
		last = buffer.last;
		size += buffer.size;
		return this;
	}
Appends other buffer to this one.