declare namespace javax {
    namespace swing {
        namespace plaf {
            namespace basic {
                namespace BasicSplitPaneUI {
                    /**
                     * LayoutManager used for JSplitPanes with an orientation of
                     * VERTICAL_SPLIT.
                     */
                    // @ts-ignore
                    class BasicVerticalLayoutManager extends javax.swing.plaf.basic.BasicSplitPaneUI.BasicHorizontalLayoutManager {
                        // @ts-ignore
                        constructor()
                    }
                }
            }
        }
    }
}