def METHOD_NAME(self):
    """ Set up any connections required by the handler
    Should return output of check_connection() method after attempting
    connection. Should switch self.is_connected.
    Returns:
        Connection Object
    """
    if self.is_connected is True:
        return self.connection
    url="http://{0}:{1}@{2}:{3}".format(self.user,self.password,self.host,self.port)
    try:
        self.connection = db.METHOD_NAME(url)
        self.is_connected= True
    except Exception as e:
        log.logger.error(f"Error while connecting to CrateDB, {e}")
    return self.connection