from typing import Optional


class DeliveryEntity:
    def __init__(self, delivery_id: Optional[int], count: int, storage_accessories_id: int, step_id: int):
        self.id = delivery_id
        self.count = count
        self.storage_accessories_id = storage_accessories_id
        self.step_id = step_id

    def __repr__(self):
        return f"<DeliveryEntity(id={self.id}, count={self.count}, storage_accessories_id={self.storage_accessories_id}, step_id={self.step_id})>"