This method is deprecated and was replaced with insert.
Adds an item to a collection.
An item can only be inserted into an existing connection. You can create a new collection using the Data Collections API.
When an item is inserted into a collection, the item's ID is automatically assigned a random value.
You can optionally provide a custom ID in dataItem.id when inserting the item.
If you specify an ID that already exists in the collection, the insertion will fail.
If options.dataItem.data is empty, a new item is created with no data fields.
Options for adding an item to a collection.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.