|Description||If the entity is a dropped item, sets the item represented by the entity.
If the entity is a trident, sets the trident item represented by the entity.
If the item is a throwable projectile, sets the display item for that projectile.
If the entity is an eye-of-ender, sets the item to be displayed and dropped by it.
If the entity is a fireball, sets the fireball's display item.