Updates the key of the element passed in. Only use this method for elements where the key is a property of the element, not the element itself. This means that if you have a heap with value typed elements (e.g. integers), updating the key is updating the value of the element itself, and because a heap might contain elements with the same value, this could lead to undefined results.

public abstract void UpdateKey<TKeyType>(
	TElement element,
	Action<TElement, TKeyType> keyUpdateFunc,
	TKeyType newValue
)

Public MustOverride Sub UpdateKey(Of TKeyType) ( 
	element As TElement,
	keyUpdateFunc As Action(Of TElement, TKeyType),
	newValue As TKeyType
)