The NetworkList is currently creating a copy of the internal list with every write operation like add, remove or their corresponding bulk methods.

As this list is actually just a Collection and never exposes the internal collection at all, creating an exact copy internally each time should not provide any benefit. As a LinkedList is backing the collection, it will still keep the the insertion order intact, regardless of creating a copy beforehand or not.

Thus the copy should actually be superfluous, but should certainly be validated later.