code: public List<WTab> getActiveTabs() {
  		List<Integer> activeIndices = getActiveIndices();
  
  		if (activeIndices.isEmpty()) {
  			return Collections.emptyList();
  		}
  
  		List<WTab> activeTabs = new ArrayList<>(activeIndices.size());
  		List<WTab> tabs = getTabs();
  
  		for (int index : activeIndices) {
  			activeTabs.add(tabs.get(index));
  		}
  
  		return Collections.unmodifiableList(activeTabs);
  	}
docs: Returns the active tabs (as seen by the given context/session).
  
  @return the active tabs (as seen by the given context/session).