Gets the setting that indicates whether the attribute is sensitive, as established by one of the constructors.
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This value is set when an instance of the System.Web.UI.WebControls.WebParts.PersonalizableAttribute class is created.
This property controls how the property value is exported. If the property is set to true, it will not be exported when the control's WebPart.ExportMode property is set to WebPartExportMode.NonSensitiveData.