@Override public boolean[] isReferencedObjectEnabled() {
    return new boolean[] { !Utils.isEmpty( transformationPath ) };
  }
@Test
  public void testIsReferencedObjectEnabled() {
    BaseStreamStepMeta meta = new StuffStreamMeta();
    assertEquals( 1, meta.isReferencedObjectEnabled().length );
    assertFalse( meta.isReferencedObjectEnabled()[ 0 ] );
    meta.setTransformationPath( "/some/path" );
    assertTrue( meta.isReferencedObjectEnabled()[ 0 ] );
    testRoundTrip( meta );
  }