/// <summary>
 /// Change the list of custom roles for the client, built-in roles are ignored.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='client'>
 /// </param>
 public static void PostUpdateRoles(this IAccounts operations, string client)
 {
     operations.PostUpdateRolesAsync(client).GetAwaiter().GetResult();
 }