@Override
	protected String toDSL() {
		return String.format("counter --name=%s", name);
	}
Used to generate the counter sink portion of a stream. Used by Acceptance testing
because it does not extend AbstractMetricSink.

@author Glenn Renfro
spring-xd-test-fixtures/src/main/java/org/springframework/xd/test/fixtures/SimpleCounterSink.java