CompareAndSetByPathNum asserts that two values with the same path in two objects (documents or arrays) are within a given numerical delta, then updates the expected object with the actual value.

CompareAndSetByPathTime asserts that two values with the same path in two objects (documents or arrays) are within a given time delta, then updates the expected object with the actual value.

GetByPath returns a value by path - a sequence of indexes and keys.

SetByPath sets the value by path - a sequence of indexes and keys.