/// <summary>
 /// Get user display name
 /// </summary>
 public static string GetUserDisplayName(this AuthenticationState state)
 {
     return(state.GetClaim(ClaimTypes.Name));
 }
 /// <summary>
 /// Get user email
 /// </summary>
 public static string GetUserEmail(this AuthenticationState state)
 {
     return(state.GetClaim("email"));
 }
 /// <summary>
 /// Get user identifier (claim name sub)
 /// </summary>
 public static string GetUserIdentifier(this AuthenticationState state)
 {
     return(state.GetClaim("sub"));
 }