public SparkAppJob sparkAppName(String sparkAppName){
		Assert.hasText(sparkAppName, "sparkAppName must not be null or empty");
		this.sparkAppName = sparkAppName;
		return this;
	}
Sets the spark App Name for the fixture
@param sparkAppName the name for the spark app
@return current instance the job.
spring-xd-test-fixtures/src/main/java/org/springframework/xd/test/fixtures/SparkAppJob.java