@Override
	protected String toDSL() {
		StringBuilder dsl = new StringBuilder("tap:stream:");
		dsl.append(streamName);
		if (label != null) {
			dsl.append(".");
			dsl.append(label);
		}
		return dsl.toString();
	}
Renders the default DSL for this fixture.
spring-xd-test-fixtures/src/main/java/org/springframework/xd/test/fixtures/Tap.java