/// <summary>
/// List all the subscriptions under a specified topic.
/// <see href="https://msdn.microsoft.com/en-us/library/azure/mt639400.aspx" />
/// </summary>
/// <param name='operations'>
/// The operations group for this extension method.
/// </param>
/// <param name='nextPageLink'>
/// The NextLink from the previous successful call to List operation.
/// </param>
public static IPage <SBSubscription> ListByTopicNext(this ISubscriptionsOperations operations, string nextPageLink)
{
return(operations.ListByTopicNextAsync(nextPageLink).GetAwaiter().GetResult());
}