/// <returns>The AccountProvider instance associated with the given application ID.</returns>
/// <privilege>http://tizen.org/privilege/account.read</privilege>
/// <feature>http://tizen.org/feature/account</feature>
/// <returns>The AccountProvider instance associated with the given application ID.</returns>
/// <privilege>http://tizen.org/privilege/account.read</privilege>
/// <feature>http://tizen.org/feature/account</feature>
/// <exception cref="ArgumentException"> In case of an invalid parameter.</exception>
/// <exception cref="UnauthorizedAccessException"> In case of privilege not defined.</exception>
/// <exception cref="NotSupportedException">The required feature is not supported.</exception>
/// <exception cref="ArgumentException"> In case of an invalid parameter.</exception>
/// <exception cref="UnauthorizedAccessException"> In case of privilege not defined.</exception>
/// <exception cref="NotSupportedException">The required feature is not supported.</exception>
/// </summary>
/// <since_tizen> 3 </since_tizen>
/// <param name="account">New Account instance to be added.</param>
/// </summary>
/// <since_tizen> 3 </since_tizen>
/// <param name="account">New Account instance to be added.</param>
/// <privilege>http://tizen.org/privilege/account.read</privilege>
/// <privilege>http://tizen.org/privilege/account.write </privilege>
/// <feature>http://tizen.org/feature/account</feature>
/// <privilege>http://tizen.org/privilege/account.read</privilege>
/// <privilege>http://tizen.org/privilege/account.write </privilege>
/// <feature>http://tizen.org/feature/account</feature>
/// <privilege>http://tizen.org/privilege/account.read</privilege>
/// <feature>http://tizen.org/feature/account</feature>
/// <exception cref="InvalidOperationException">In case of any DB error.</exception>
/// <privilege>http://tizen.org/privilege/account.read</privilege>
/// <feature>http://tizen.org/feature/account</feature>
/// <exception cref="InvalidOperationException">In case of any DB error.</exception>