Adds a item or items.
add(items)
items object or array, item or array of items
Returns undefined.

Description

The items argument can be either an object or array of objects. If it is an object it represents a item object that will be added to .items array. If it is an array then each element of the array will be treated as a separate item object.
If you have listview defined in the following way: You can add items: