@abstractmethod<EOL><INDENT>def finishLearning(self):<DEDENT>
Place the model in a permanent "finished learning" mode.
        In such a mode the model will not be able to learn from subsequent input
        records.

        .. note:: Upon completion of this command, learning may not be resumed on
           the given instance of the model (e.g., the implementation may optimize
           itself by pruning data structures that are necessary for learning).