code: private String getSplitsAsString() {
  		return processFunction(new AbstractSplitFunction<StringBuilder>(new StringBuilder()) {
  			private boolean first = true;
  
  			@Override
  			public void evaluate(long runningFor) {
  				if (first) {
  					first = false;
  				} else {
  					result.append(',');
  				}
  				result.append(presentNanoTime(runningFor));
  			}
  		}).toString();
  	}
docs: Transforms split values into a String
  
  @return Splits presented in a String