ExprMissingValue extends AbstractExprValue { @Override public Object value() { return null; } 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 getValue() { assertNull(LITERAL_MISSING.value()); }