Acumatica Field Services - Extending Appointments to connect to Power Automate

ExtAppointmentEntry.cs

public class ExtAppointmentEntry : PXGraphExtension<AppointmentEntry>
    {
        public static bool IsActive() { return true; }

        public delegate IEnumerable StartAppointmentDelegate(PXAdapter adapter);
        [PXOverride]
        public IEnumerable StartAppointment(PXAdapter adapter, StartAppointmentDelegate baseMethod)
        {
            //send request to Microsoft PowerFlow
            var client = new RestClient("https:/***.azure.com:443/workflows/");
            client.Timeout = -1;
            var request = new RestRequest(Method.PUT);
            IRestResponse response = client.Execute(request);
            PXTrace.WriteInformation(response.Content);

            //Complete the base Method
            return baseMethod(adapter);  

        }
    }