public static async Task RecreateIndexAsync(this IIndex index, CancellationToken cancellationToken)
{
// Validate parameters.
if (index == null)
{
throw new ArgumentNullException(nameof(index));
}
// Destroy the index if it exists.
if (await index.ExistsAsync(cancellationToken).ConfigureAwait(false))
{
// Destroy it.
await index.DestroyAsync(cancellationToken).ConfigureAwait(false);
}
// Create the index.
await index.CreateAsync(cancellationToken).ConfigureAwait(false);
}