paletteLabel
The label that appears when the toolbar item is in the customization palette.
Declaration
var paletteLabel: String { get set }Discussion
If you support toolbar customizations, you must provide palette labels for your items. In most cases, you can apply the same value to this property and the label property. However, you might use this property to offer a more descriptive string, or to provide a label string when the label property contains an empty string.