//Checks to see if there is already a conversation between the device and emulator
        private Conversation _GetConversation()
        {
            if (activeConversation == null)
            {
                LayerQuery query = LayerQuery.InvokeBuilder(Java.Lang.Class.FromType(typeof(Conversation)))
                                   .Predicate(new Predicate(Conversation.Property.Participants,
                                                            Predicate.Operator.EqualTo, new Java.Util.ArrayList(MainActivity.GetAllParticipants())))
                                   .SortDescriptor(new SortDescriptor(Conversation.Property.CreatedAt,
                                                                      SortDescriptor.Order.Descending))
                                   .Build();

                IList results = layerClient.ExecuteQuery(query, LayerQuery.ResultType.Objects);
                if (results != null && results.Count > 0)
                {
                    return(results[0] as Conversation);
                }
            }

            //Returns the active conversation (which is null by default)
            return(activeConversation);
        }