### Question:
IsEmptyOperator extends AbstractOperator implements RelationalOperator { @Override public String getName() { return "IsEmptyOperator"; } IsEmptyOperator(); @Override String getName(); @Override Predicate toPredicate(String prop, String val); @Override TYPE getType();  }### Answer:
@Test public void testGetName() { assertEquals("IsEmptyOperator", new IsEmptyOperator().getName()); }