code: public static String outputNestedList(NestedList nl, int depth){
  		String result = "";
  		if(nl == null)
  		 {
  			return result; // If null return empty string
  		}
  
  		for(int i = 0; i<depth; i++)
  		 {
  			result += " ";		// insert indentation according to depth
  		}
  
  		if(nl.getClass() == NestedListElement.class){ // If it is a NestedListElement,
  													  // we reached a leaf, return its contents
  			result += nl.getText();
  		}else{
  			result += "---";	// If it is not a NestedListElement, it is a NestedListContainer
  								// print out all its childs, increment depth
  			for(NestedList nl2 : ((NestedListContainer)nl).getNestedLists()) {
  				result += "\n"+outputNestedList(nl2, depth+1);
  			}
  		}
  
  		return result;
  	}
docs: Returns String with all elements of a NestedList
  @param nl NestedList
  @param depth Current depth of the Nestedlist
  @return