OptionalexpandedWhether this item's children are expanded (visible).
OptionalhiddenWhether this item is hidden (filtered out).
OptionalitemIndex into the corresponding cache field's sharedItems array. Absent for non-data items (subtotals, grand totals, blanks).
OptionalitemThe type of this item.
OptionalmissingWhether this item refers to a value that is no longer in the source data (a "missing" item).
OptionalnameDisplay name override for this item. When absent, the item's name is derived from the cache field's shared items.
An item within a pivot field. Items represent individual values, subtotals, or other special entries in a row or column field.