src/ClientSideMonitoring/ConfigurationProvider.php
public static function fallback()
    {
        return function() {
            return Promise\promise_for(
                new Configuration(
                    self::DEFAULT_ENABLED,
                    self::DEFAULT_PORT,
                    self::DEFAULT_CLIENT_ID
                )
            );
        };
    }
public static function fallback()
    {
        return function() {
            return Promise\promise_for(
                new Configuration(
                    self::DEFAULT_ENABLED,
                    self::DEFAULT_PORT,
                    self::DEFAULT_CLIENT_ID
                )
            );
        };
    }
public static function fallback ( ) { return function ( ) { return Promise \ promise_for ( new Configuration ( self :: DEFAULT_ENABLED , self :: DEFAULT_PORT , self :: DEFAULT_CLIENT_ID ) ) ; } ; }
Fallback config options when other sources are not set.

@return callable
Fallback config options when other sources are not set .