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Inserts the specified items at the specified startingIndex in the collection.
public virtual Task<int> InsertRangeAsync(int startingIndex, IEnumerable<S> items, CancellationToken cancellationToken = default)
| Type | Name | Description |
|---|---|---|
| int | startingIndex | The index where the item will be inserted. |
| IEnumerable<S> | items | The items to be inserted. |
| CancellationToken | cancellationToken | The cancellation token. |
| Type | Description |
|---|---|
| Task<int> |