def _register_bindings(self, data):
        """
        connection_handler method which is called when we connect to pusher.
        Responsible for binding callbacks to channels before we connect.
        :return:
        """
        self._register_diff_order_book_channels()
        self._register_live_orders_channels()
        self._register_live_trades_channels()
        self._register_order_book_channels()
connection_handler method which is called when we connect to pusher.
        Responsible for binding callbacks to channels before we connect.
        :return: