getFirstRecord throw IllegalStateException

Hi,

In my project I created some test by morphline test framework and I found that getFirstRecord method thrown an IllegalStateException in case Collector has multiple Record:

Extract code from kite/kite-morphlines/kite-morphlines-core/src/test/java/org/kitesdk/morphline/api/Collector.java:

...
public Record getFirstRecord() {
if (records.size() != 1)

{ throw new IllegalStateException(); }
if (records.get(0) == null) { throw new IllegalStateException(); }

return records.get(0);
}
...

Possible patch:

• if (records.size() != 1) {
  + if (records.size() < 1) {

Best regards