code: static public function getTypes()
      {
          return [
              static::MANUAL,
              static::CART_REMIND,
              static::ORDER_ACCEPTED,
              static::QUOTE_REMIND,
              static::PAYMENT_CAPTURED,
              static::PAYMENT_EXPIRED,
              static::SHIPMENT_SHIPPED,
              static::SHIPMENT_PARTIAL,
              static::RETURN_PENDING,
              static::RETURN_RECEIVED,
          ];
      }
docs: Returns all the types.
  
  @return array