Error messages included in SlackException message

SlackNet/SlackException.cs

@@ -13,7 +13,9 @@ public class SlackException : Exception
  public SlackException(ErrorResponse errorResponse)
  : base(errorResponse == null
  ? "Slack returned an unknown error response type"
- : $"Slack returned an error response: {errorResponse.Error}.")
+ : string.Join(Environment.NewLine,
+ new[] { $"Slack returned an error response: {errorResponse.Error}." }
+ .Concat(errorResponse.ResponseMetadata?.Messages ?? [])))
  {
  ErrorCode = errorResponse?.Error ?? "unknown";
  ErrorMessages = errorResponse?.ResponseMetadata?.Messages.ToList() ?? [];

SlackNet/WebApi/CallsApi.cs

@@ -14,7 +14,7 @@ public interface ICallsApi
  /// <remarks>See the <a href="https://api.slack.com/methods/calls.add">Slack documentation</a> for more information.</remarks>
  /// <param name="externalUniqueId">An ID supplied by the 3rd-party Call provider. It must be unique across all Calls from that service.</param>
  /// <param name="joinUrl">The URL required for a client to join the Call.</param>
- /// <param name="createdByUserId">The valid Slack user ID of the user who created this Call. When this method is called with a user token, the <see cref="createdBy"/> parameter is optional and defaults to the authed user of the token. Otherwise, the field is required.</param>
+ /// <param name="createdByUserId">The valid Slack user ID of the user who created this Call. When this method is called with a user token, the <see cref="createdByUserId"/> parameter is optional and defaults to the authed user of the token. Otherwise, the field is required.</param>
  /// <param name="dateStart">Call start time.</param>
  /// <param name="desktopAppJoinUrl">When supplied, available Slack clients will attempt to directly launch the 3rd-party Call with this URL.</param>
  /// <param name="externalDisplayId">An optional, human-readable ID supplied by the 3rd-party Call provider. If supplied, this ID will be displayed in the Call object.</param>