Array of non-null chrome.cast.media.QueueItem
The list of media items to insert. Must not be null or empty. The itemId of each item must not be set (as they will be assigned by the receiver).
Value must not be null.
Custom data for the receiver application.
ID of the item that will be located immediately after the inserted list. If null or not found the list will be appended to the end of the queue.
non-null Array of non-null chrome.cast.media.QueueItem
List of queue items to insert. The itemId field of the items should be empty or the request will fail with an INVALID_PARAMS error. It is sorted (first element will be played first).