docs: def register_model(self, model_id, properties, parameters, outputs, connector):
          """Create an experiment object for the subject and image group. Objects
          are referenced by their identifier. The reference to a functional data
          object is optional.
  
          Raises ValueError if no valid experiment name is given in property list.
  
          Parameters
          ----------
          model_id : string
              Unique model identifier
          properties : Dictionary
              Dictionary of model specific properties.
          parameters : list(scodata.attribute.AttributeDefinition)
              List of attribute definitions for model run parameters
          outputs : ModelOutputs
              Description of model outputs
          connector : dict
              Connection information to communicate with model workers
  
          Returns
          -------
          ModelHandle
              Handle for created model object in database
          """
          # Create object handle and store it in database before returning it
          obj = ModelHandle(model_id, properties, parameters, outputs, connector)
          self.insert_object(obj)
          return obj