Entity is a pointer to a struct that we want to decode the value into.

traverse iterates over a range of keys defined by a prefix.

CheckFunc is called during key iteration through the badger DB in order to check whether we should process the given key-value pair.

CreateFunc returns a pointer to an initialized entity that we can potentially decode the next value into during a badger DB iteration.

HandleFunc is a function that starts the processing of the current key-value pair during a badger iteration.

IterationFunc is a function provided to our low-level iteration function that allows us to pass badger efficiencies across badger boundaries.