protected override async void OnAppearing()
        {
            base.OnAppearing();
            Exercise = await GetExercise();

            Exercise = await RepController.PrepareRepSummaryAsync(Exercise);

            Exercise.Key = Key;
            Refresh();
        }
        private async Task <string> PrepareAddExerciseSummary(Exercise ex)
        {
            string summary = null;

            ex = await RepController.PrepareRepSummaryAsync(ex);

            foreach (var eType in ex.Types)
            {
                summary += (eType.Summary + "\n");
            }

            return(summary);
        }