code: public static String addMethod(Method m) {
      if (methods == null) {
        methods = new HashMap<String, Method>();
      }
  
      String hashCode = String.valueOf(m.hashCode());
  
      if (!methods.containsKey(hashCode)) {
        methods.put(hashCode, m);
      }
  
      return String.valueOf(m.hashCode());
    }
docs: Adds a method to the registry and returns the UUID.
  
  @return