* Will return result type if all operands of valid types
* for that operation or NULL (!) if they are not.
*/
public HaxeType defineResultType()
{
BoolOperations operationType = getOperationType();
HaxeType leftType = getLeftOperand().getHaxeType();
HaxeType rightType = getRightOperand().getHaxeType();
return super.defineResultType(operationType, leftType, rightType);
}