Sets whether self is collapsed.
When collapsed, the children are put inside an classNavigationView, otherwise they are displayed side by side.
The propertyNavigationSplitView:show-content controls which child is visible while collapsed.
whether self is collapsed
Sets whether self is collapsed.
When collapsed, the children are put inside an classNavigationView, otherwise they are displayed side by side.
The propertyNavigationSplitView:show-content controls which child is visible while collapsed.