code: def params(self):
          
          params = {}
          params["access_token"] = self.access_token
          params["account_id"] = self.account_id
          params["alert_id"] = self.alert_id
  
          if self.since_id:
              params["since_id"] = self.since_id
          else:
              params["before_date"] = self.before_date if self.before_date else ""
              params["not_before_date"] = self.not_before_date if self.before_date else ""
              params["cursor"] = self.cursor if self.cursor else ""
  
          if self.unread:
              params["unread"] = self.unread
          else:
              if (self.favorite) and (
                  (self.folder == "inbox") or (self.folder == "archive")):
                  params["favorite"] = self.favorite
                  params["folder"] = self.folder
              else:
                   params["folder"] = self.folder if self.folder else ""   
              params["q"] = self.q if self.q else ""
              params["tone"] = self.tone if self.tone else ""
  
          if int(self.limit) > 1000:
              params["limit"] = "1000"
          elif int(self.limit) < 1:
              params["limit"] = ""
          else:
              params["limit"] = self.limit
  
          params["source"] = self.source if self.source else ""
  
          params["countries"] = self.countries if self.countries else ""
          params["include_children"] = self.include_children if self.include_children else ""
          params["sort"] = self.sort if self.sort else ""
          params["languages"] = self.languages if self.languages else ""
          params["timezone"] = self.timezone if self.timezone else ""
  
          # Deletes parameter if it does not have a value
          for key, value in list(params.items()):
              if value == '':
                  del params[key]
  
          return params
docs: Parameters used in the url of the API call and for authentication.
  
          :return: parameters used in the url.
          :rtype: dict