Refactor PHP discovery snippetgen for MVVM

src/test/java/com/google/api/codegen/testdata/discoveries/java/java_storagetransfer.v1.json.baseline

@@ -27,12 +27,8 @@ import java.util.Arrays;
 
 public class StoragetransferExample {
   public static void main(String args[]) throws IOException, GeneralSecurityException {
-    // The ID of the Google Developers Console project that the Google service account is associated with.
-    // Required.
-    String projectId = "";  // TODO: Update placeholder value.
-
     Storagetransfer storagetransferService = createStoragetransferService();
-    Storagetransfer.GoogleServiceAccounts.Get request = storagetransferService.googleServiceAccounts().get(projectId);
+    Storagetransfer.V1.GetGoogleServiceAccount request = storagetransferService.v1().getGoogleServiceAccount();
 
     GoogleServiceAccount response = request.execute();