ChainedErrorHandling uses `done.VCE` to streamline error handling in a chained manner.

CompactChainedHandling represents the most compact form of chained error handling.

ManualErrorHandling demonstrates step-by-step manual error handling.

NewXyz creates a new XyzType instance.

AbcType represents the second layer of the object hierarchy.

UvwType represents the final object containing the result.

XyzType represents the first layer of the object hierarchy.