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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def destroy_page(self, tab_dict):
 """ Destroys desired page Disconnects the page from signals and removes interconnection to parent-controller or observables. :param tab_dict: Tab-dictionary that holds all necessary information of a page and state-editor. """

        # logger.info("destroy page %s" % tab_dict['controller'].model.state.get_path())
        if tab_dict['source_code_changed_handler_id'] is not None:
            handler_id = tab_dict['source_code_changed_handler_id']
            if tab_dict['controller'].view.source_view.get_buffer().handler_is_connected(handler_id):
                tab_dict['controller'].view.source_view.get_buffer().disconnect(handler_id)
            else:
                logger.warning("Source code changed handler of state {0} was already removed.".format(tab_dict['state_m']))
        self.remove_controller(tab_dict['controller'])