Raven.Client.Document.AsyncHiLoKeyGenerator.GetDocumentAsync C# (CSharp) Method

		private Task<JsonDocument> GetDocumentAsync(IAsyncDatabaseCommands databaseCommands)
		{
			return databaseCommands.GetAsync(new[] { HiLoDocumentKey, RavenKeyServerPrefix }, new string[0])
				.ContinueWith(task =>
				{
					var documents = task.Result;
					if (documents.Results.Count == 2 && documents.Results[1] != null)
					{
						lastServerPrefix = documents.Results[1].Value<string>("ServerPrefix");
					}
					else
					{
						lastServerPrefix = string.Empty;
					}
					if (documents.Results.Count == 0 || documents.Results[0] == null)
						return (JsonDocument)null;

					var jsonDocument = documents.Results[0].ToJsonDocument();
					foreach (var key in jsonDocument.Metadata.Keys.Where(x => x.StartsWith("@")).ToArray())
					{
						jsonDocument.Metadata.Remove(key);
					}
					return jsonDocument;
				});
		}
	}