NSCollectionViewSectionHeaderViewMBS.sectionCollapseButton as NSButtonMBS

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
property	Cocoa Collection View	MBS MacControls Plugin	21.3	✅ Yes	❌ No	❌ No	❌ No	Desktop only

A control that lets users collapse and open a collection view section.

For the best user experience, set this property to the button that lets users control the collapsing of a section so that the collection view can show and hide the button appropriately, based on whether the section’s items can be displayed in the available space. The collection view uses its toggleSectionCollapse property to access this button.
(Read and Write property)