@Override
	public List<JobNode> getSeries() {
		return jobsInParallel;
	}
The AST node representing a split. A split is a series of jobs to execute in parallel. Those jobs
can themselves be individual jobs or splits. In DSL form a flow is expressed like this:
<pre><tt><aa & bb></tt></pre>.

@author Andy Clement
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/job/dsl/Split.java