def METHOD_NAME(self, row: int, column: int) -> bool:
    """
    to check if a channel is closed/connected
    Args:
        row: row number
        column: column number
    Returns:
        True if the channel is closed/connected
        False if it's open/disconnected.
    """
    self.validate_value(row, column)
    channel = self.to_channel_list([(row, column)])
    message = self.ask(f'ROUT:CLOSe? {channel}')
    return bool(int(message))