text: import json, time, pprint
  
  
  from datetime import datetime,timedelta
  from typing import Mapping
  from uuid import uuid4
  
  from .provider import Provider
  
  class Portfolio():
      def __init__(self, provider: Provider , name: str = 'default'):
          self._id = uuid4()
          self.name = name
          self.client = provider
  
      @property
      def id(self):
          return str(self._id)
      
      @property
      def name(self):
          return self.name