private void btnAmazonWebServices_Click(object sender, EventArgs e)
 {
     MessageBox.Show("AWS Source work in progress from old version, not yet functional.");
     AfterMigrationSourceSelected?.Invoke(new MigrationAWSSourceContext());
 }
 private void btnAzure_Click(object sender, EventArgs e)
 {
     AfterMigrationSourceSelected?.Invoke(new MigrationAzureSourceContext());
 }