@Override
    public String getSource() {
        return source;
    }
@Test
    public void testGetSource() {
        assertEquals("source", batchEventData.getSource());
        assertEquals("source", batchEventDataSameAttribute.getSource());
        assertEquals("otherSource", batchEventDataOtherSource.getSource());
        assertEquals("source", batchEventDataOtherPartitionId.getSource());
        assertEquals("source", batchEventDataOtherEvent.getSource());
        assertEquals("source", batchEventDataNoEvent.getSource());
    }