code: public void addTab(String title, Icon icon, final Component c, boolean hideable, boolean visible, int index) {
  	    addTab(title, icon, c, hideable, visible, index, true);
  	}
docs: Adds a tab with the given component.
  
  @param title the title of the tab.
  @param icon the icon of the tab.
  @param c the component of the tab.
  @param hideable {@code true} if the tab can be hidden, {@code false} otherwise.
  @param visible {@code true} if the tab should be visible, {@code false} otherwise.
  @param index the index of the tab.