class_docstr: An enumeration for the status of an order.
code: def __str__(self):
      return self.value
  
imports: import uuid
  from enum import Enum
  from typing import Callable
  from decimal import Decimal
  from tensortrade.core import TimedIdentifiable, Observable
  from tensortrade.core.exceptions import InvalidOrderQuantity
  from tensortrade.oms.instruments import Quantity, ExchangePair
  from tensortrade.oms.orders import Trade, TradeSide, TradeType
label_desc: Use image node_id 1 for calling the OrderStatus obj's underlying member method code with example usage: obj.__str__() and returns: self