code: public Properties getOutputFormat() {
          Properties def = new Properties();
          {
              Set s = getOutputPropDefaultKeys();
              Iterator i = s.iterator();
              while (i.hasNext()) {
                  String key = (String) i.next();
                  String val = getOutputPropertyDefault(key);
                  def.put(key, val);
              }
          }
          
          Properties props = new Properties(def);
          {
              Set s = getOutputPropKeys();
              Iterator i = s.iterator();
              while (i.hasNext()) {
                  String key = (String) i.next();
                  String val = getOutputPropertyNonDefault(key);
                  if (val != null)
                      props.put(key, val);
              }
          }
          return props;
      }
docs: Returns the output format for this serializer.
  
  @return The output format in use