docs: public static @Nullable
      User get(String idOrFullName, boolean create, @Nonnull Map context) {
          if (idOrFullName == null) {
              return null;
          }
  
          User user = AllUsers.get(idOrFullName);
          if (user != null) {
              return user;
          }
  
          String id = CanonicalIdResolver.resolve(idOrFullName, context);
          return getOrCreateById(id, idOrFullName, create);
      }