/// <summary>
        /// AddAgentAsync
        /// </summary>
        /// <param name="agent"></param>
        /// <returns></returns>
        public async Task <AgentModel> AddAgentAsync(AgentModel agent)
        {
            try
            {
                using (var db = new CosmosUtil <AgentModel>("agents"))
                {
                    var theAgent = await db.GetItemAsync(agent.Id.ToString(), agent.Id.ToString());

                    if (theAgent != null) // Agent already exists
                    {
                        return(theAgent);
                    }

                    // Otherwise, add a new agent
                    agent.UpdatedOn = DateTime.UtcNow.ToString();

                    //Create or replace the Scores document
                    await db.UpsertItemAsync(agent);

                    return(agent);
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
                throw;
            }
        }
 /// <summary>
 /// GetAgent
 /// </summary>
 /// <param name="agentId"></param>
 /// <returns></returns>
 public async Task <AgentModel> GetAgent(Guid agentId)
 {
     try
     {
         using (var db = new CosmosUtil <AgentModel>("agents"))
         {
             return(await db.GetItemAsync(
                        agentId.ToString(),
                        agentId.ToString()));
         }
     }
     catch (Exception e)
     {
         Console.WriteLine(e);
         throw;
     }
 }