/// <summary>
        /// Changes the priority of a list of issues on a given priority ID
        /// </summary>
        /// <param name="IssueKeys"></param>
        /// <param name="PriorityId"></param>
        /// <param name="waiter"></param>
        /// <param name="eventHandler"></param>
        public static void SetPriorities(List <string> IssueKeys, string PriorityId,
                                         EventHandler <ResponseArg> eventHandler)
        {
            List <RestRequest> requests = new List <RestRequest>();

            foreach (var issueKey in IssueKeys)
            {
                var request = new RestRequest("issue/" + issueKey, Method.PUT);
                request.AddHeader("Content-Type", "application/json");
                request.RequestFormat = RestSharp.DataFormat.Json;
                var newissue =
                    new
                {
                    fields = new
                    {
                        priority = new
                        {
                            id = PriorityId
                        }
                    }
                };
                request.AddBody(newissue);
                requests.Add(request);
            }
            BackgroundJira bj = new BackgroundJira();

            bj.WorkerComplete += eventHandler;
            bj.Start <Priority>(requests);
        }
        /// <summary>
        /// Changes status to an issue on a given Transition ID
        /// </summary>
        /// <param name="IssueKey">Jira Key of the Issue</param>
        /// <param name="TransitionId">Jira Transition ID</param>
        /// <param name="waiter">Background waiter animation</param>
        /// <param name="eventHandler">Event handler to fire after the action is complete</param>
        public static void SetTransition(string IssueKey, string TransitionId,
                                         EventHandler <ResponseArg> eventHandler)
        {
            var request =
                new RestRequest(
                    "issue/" + IssueKey + "/transitions",
                    Method.POST);

            request.AddHeader("Content-Type", "application/json");
            request.RequestFormat = RestSharp.DataFormat.Json;
            var newcomment = new { transition = new { id = TransitionId } };

            request.AddBody(newcomment);
            List <RestRequest> requests = new List <RestRequest>();

            requests.Add(request);
            BackgroundJira bj = new BackgroundJira();

            bj.WorkerComplete += eventHandler;
            bj.Start <Status>(requests);
        }