ExprMissingValue extends AbstractExprValue { @Override public boolean isMissing() { return true; } private  ExprMissingValue(); static ExprMissingValue of(); @Override Object value(); @Override ExprType type(); @Override boolean isMissing(); @Override int compare(ExprValue other); @Override boolean equal(ExprValue other); @Override int hashCode(); @Override String toString();  }
@Test public void test_is_missing() { assertTrue(LITERAL_MISSING.isMissing()); }