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Gets or sets a value indicating whether to show or hide the ExpandIcon for this C1AccordionPage, regardless of the ShowExpandIcon set in PageSettings value.
public IconsDisplayMode ShowExpandIcon { get; set; }
By default it set to Inherit that means using common PageSettings.
If you need a special appearance for this page, than set it to ShowAlways to display ExpandIcon in this C1AccordionPage header or HideAlways to hide.