C.cs

void Main()
{
	var c = new ConfigStuff(new ConfigResolver());
	c.GetNormalized().Dump();
}

// Define other methods and classes here
class ConfigStuff {
	private readonly Lazy<object> _configNormalizedLazy;
	
	public ConfigStuff(IConfigResolver configResolver)
	{
		_configNormalizedLazy = new Lazy<object>(() => Normalize(configResolver.Get()));
	}
	
	public object GetNormalized() {
		return _configNormalizedLazy.Value;
	}
	
	private object Normalize(dynamic config) {
		var normalizedConfig = new { url = config.url.ToUpper() };
		return normalizedConfig;
	}
}

interface IConfigResolver {
	object Get();
}

class ConfigResolver : IConfigResolver {
	public object Get() {
		return new { url = "http://lal" };
	}
}