public async override Task Initialize()
{
await base.Initialize();
if (NavigationParameter is Contribution contribution)
{
Contribution = contribution.ToContributionViewModel();
IsEditing = contribution.ContributionId.HasValue && contribution.ContributionId.Value > 0;
PickContributionTypeCommand.RaiseCanExecuteChanged();
}
Contribution.AddValidationRules();
if (!IsEditing)
{
await CheckForClipboardUrl();
}
}