code: public UserInformation getInformation(String accountId, String userId) throws ApiException {
      return getInformation(accountId, userId, null);
    }
docs: Gets the user information for a specified user.
  Retrieves the user information for the specified user.   To return additional user information that details the last login date, login status, and the user&#39;s password expiration date, set the optional &#x60;additional_info&#x60; query string parameter to **true**.
  @param accountId The external account number (int) or account ID Guid. (required)
  @param userId The user ID of the user being accessed. Generally this is the user ID of the authenticated user, but if the authenticated user is an Admin on the account, this may be another user the Admin user is accessing. (required)
  @return UserInformation