code: public boolean isActiveInMenuTree(MenuEntry activeMenu, MenuEntry actualEntry) {
  		return actualEntry.flattened().anyMatch(
  				entry -> checkForNull(entry, activeMenu) ? entry.getName().equals(activeMenu.getName()): false);
  	}
docs: checks if actualEntry contains the activeMenuName in entry itself and its
  sub entries
  
  @param activeMenuName
  @param actualEntry current iterated object
  @return