A plain object representing an enum with property names used to generate localization keys with enumLocalizationPrefix
to retrieve displayed values or property values to be displayed; or an Array of plain objects with properties:
text [type: String] - The text to be displayed by the options property grid editor.
value [type: Object] - The value stored in the property when an option is chosen.
Or, if isAsyncOptions is true, a jQuery.Promise object which resolves with the above described array.