def get_default_config(self):
        """
        Return default config for the handler
        """
        config = super(AppenlightMetricHandler, self).get_default_config()

        config.update({
            'apikey': '',
            'server': 'https://api.appenlight.com',
            'queue_size': 100
        })

        return config

        Return default config for the handler
        
src/diamond/handler/appenlight.py