code: def add_config(self, slot, config_id, config_type, value):
          
  
          if slot not in self.config_database:
              self.config_database[slot] = {}
  
          self.config_database[slot][config_id] = (config_type, value)
docs: Add a config variable assignment to this sensor graph.
  
          Args:
              slot (SlotIdentifier): The slot identifier that this config
                  variable is assigned to.
              config_id (int): The 16-bit id of this config_id
              config_type (str): The type of the config variable, currently
                  supported are fixed width integer types, strings and binary
                  blobs.
              value (str|int|bytes): The value to assign to the config variable.