Raven.Database.DocumentDatabase.RemoveReservedProperties C# (CSharp) Method

		private static void RemoveReservedProperties(RavenJObject document)
		{
			var toRemove = new HashSet<string>();
			foreach (var propertyName in document.Keys.Where(propertyName => propertyName.StartsWith("@")))
			{
			    toRemove.Add(propertyName);
			}
			foreach (var propertyName in toRemove)
			{
				document.Remove(propertyName);
			}
		}