/// <inheritdoc />
public async Task RetrieveUserAsync()
{
if (Fetched != true)
{
User = await _userService.GetUserFromClaim(_httpContextAccessor.HttpContext.User);
Groups = User == null ? new List <string>() : await _userManager.GetRolesAsync(User);
Groups.AddRange(SecurityUtilities.GetAllAcls()
.Where(x => x.IsVisitorAcl && x.Group != null)
.Select(x => x.Group)
.ToHashSet());
Fetched = true;
}
}