Replace a UserName key in a content block with the logged in users User Name

ReplaceUserName.cshtml

@model Telerik.Sitefinity.Frontend.ContentBlock.Mvc.Models.IContentBlockModel
@using Telerik.Sitefinity.Frontend.Mvc.Helpers
@using Telerik.Sitefinity.Security.Claims;
<div class="@Model.WrapperCssClass" @Html.InlineEditingAttributes(Model.ProviderName, Model.ContentType, Model.SharedContentID)>
	<div @Html.InlineEditingFieldAttributes("Content", "LongText")>@ReplaceUserName(Model.Content)</div>
	@{
		if (Model.EnableSocialSharing)
		{
			@Html.SocialShareOptions(null);
		}
	}
</div>
@helper ReplaceUserName(string content)
{
	string userName = "Not Logged In";
	var identity = ClaimsManager.GetCurrentIdentity();
	if (identity != null)
	{
		userName = identity.Name;
	}
	@Html.HtmlSanitize(content.Replace("{|UserName|}", userName))
}