Walk takes an arbitrary value and an interface and traverses the value, calling callbacks on the interface if they are supported.

ErrSkipEntry can be returned from walk functions to skip walking the value of this field.

ArrayWalker implementations are able to handle array elements found within complex structures.

EnterExitWalker implementations are notified before and after they walk deeper into complex structures (into struct fields, into slice elements, etc.).

InterfaceWalker implementations are able to handle interface values as they are encountered during the walk.

PointerValueWalker implementations are notified with the value of a particular pointer when a pointer is walked.

SliceWalker implementations are able to handle slice elements found within complex structures.

StructWalker is an interface that has methods that are called for structs when a Walk is done.