Async variant of SaveEntity(IEntity2, Boolean). Saves the passed in entity to the persistent storage. If the entity is new, it will be inserted, if the entity is existent, the changed entity fields will be changed in the database. Will do a recursive save. Will pass the concurrency predicate returned by GetConcurrencyPredicate(ConcurrencyPredicateType.Save) as update restriction.

Task<bool> SaveEntityAsync(
	IEntity2 entityToSave,
	bool refetchAfterSave,
	CancellationToken cancellationToken
)

Function SaveEntityAsync ( 
	entityToSave As IEntity2,
	refetchAfterSave As Boolean,
	cancellationToken As CancellationToken
) As Task(Of Boolean)