code: def list(self, **params):
          
  
          _, _, contacts = self.http_client.get("/contacts", params=params)
          return contacts
docs: Retrieve all contacts
  
          Returns all contacts available to the user according to the parameters provided
  
          :calls: ``get /contacts``
          :param dict params: (optional) Search options.
          :return: List of dictionaries that support attriubte-style access, which represent collection of Contacts.
          :rtype: list