code: public void addAccount(Account account, String... visibileToPackages) {
      addAccount(account);
      HashSet<String> value = new HashSet<>();
      Collections.addAll(value, visibileToPackages);
      packageVisibileAccounts.put(account, value);
    }
docs: Adds an account to the AccountManager but when {@link AccountManager#getAccountsByTypeForPackage(String, String)}
  is called will be included if is in one of the #visibileToPackages
  
  @param account User account.