This section shows us we can use message sends in conditions and code blocks. This is a common learning obstacle.

A short video on this section is here...
while (MESSAGE-SEND-HERE) {
	MESSAGE-SEND-HERE
}
The condition and code block are just Java code.
Thus we can freely send messages as we like.
	public void loopSendingMessages()  {
		int sum = 0;
		while (this.canContinue()) {
			this.increaseSum();
			this.incrementCount();
		}
		this.printSum();
	}