public void resizeColumns() {
		try {
			Method method = getClass().getClassLoader()
						.loadClass("javafx.scene.control.skin.TableSkinUtils")
						.getMethod("resizeColumnToFitContent", TableViewSkinBase.class, TableColumnBase.class, int.class);
			method.setAccessible(true);
	
			for (TreeTableColumn<R, ?> column : this.getColumns()) {
				method.invoke(null,  getSkin(), column, -1);
			}
		} catch (Throwable t) {
			//for some reason, a NPE will be thrown now and then, some racing condition?
			log.warn("Failed to resize columns");
		}
//		TableSkinUtils.resizeColumnToFitContent((TableViewSkinBase<?, ?, ?, ?, ?>) getSkin(), getTreeColumn(), -1);
//		((ResizableJfxTreeTableViewSkin<R>)getSkin()).resizeAllColumns();
	}
 

/**
 * TableColumnの名前を取得する
 * @param column TableColumn
 * @return TableColumnの名前
 */
public static String getColumnName(TableColumn<?, ?> column) {
    LinkedList<String> names = null;
    TableColumnBase<?, ?> parent = column;
    while ((parent = parent.getParentColumn()) != null) {
        if (names == null) {
            names = new LinkedList<>();
        }
        names.addFirst(parent.getText());
    }
    if (names != null) {
        return names.stream().collect(Collectors.joining(".")) + "." + column.getText();
    } else {
        return column.getText();
    }
}
 

public JFXNestedTableColumnHeader(TableViewSkinBase skin, TableColumnBase tc) {
    super(skin, tc);
}
 

protected TableColumnHeader createTableColumnHeader(TableColumnBase col) {
    return col.getColumns().isEmpty() ?
        new JFXTableColumnHeader(getTableViewSkin(), col) :
        new NestedTableColumnHeader(getTableViewSkin(), col);
}
 

public JFXTableColumnHeader(TableViewSkinBase skin, TableColumnBase tc) {
    super(skin, tc);
}