@Override
	public String toDSL() {
		StringBuilder dsl = new StringBuilder("filepollhdfs ");
		if (fileName != null) {
			dsl.append(" --fileName=" + fileName);
		}
		if (directory != null) {
			dsl.append(" --directory=" + directory);
		}
		if (names != null) {
			dsl.append(" --names=" + names);
		}
		return dsl.toString();

	}
Renders the default DSL for this fixture.
spring-xd-test-fixtures/src/main/java/org/springframework/xd/test/fixtures/FilePollHdfsJob.java