code: public static List<String> getTags() {
  		List<String> tags = new ArrayList<String>();
  		for (String writerProperty : Configuration.getSiblings("writer").keySet()) {
  			String tag = Configuration.get(writerProperty + ".tag");
  			if (tag != null && !tag.isEmpty() && !tag.equals("-") && !tags.contains(tag)) {
  				tags.add(tag);
  			}
  		}
  		return tags;
  	}
docs: Loads all tags from writers in configuration.
  
  @return Found tags