simplified further

ui-samples-plugin/src/main/java/jenkins/plugins/ui_samples/UISample.java

@@ -82,13 +82,9 @@ public abstract class UISample implements ExtensionPoint, Action, Describable<UI
     }
 
     public static List<UISample> getGroovySamples() {
-        ExtensionList<UISample> list = Jenkins.getInstance().getExtensionList(UISample.class);
         List<UISample> r = new ArrayList<UISample>();
-        for (Iterator<UISample> ite = list.iterator(); ite.hasNext(); ) {
-            UISample uiSample = ite.next();
-            List<SourceFile> sourceFiles = uiSample.getSourceFiles();
-            for (Iterator<SourceFile> srcFileITe = sourceFiles.iterator(); srcFileITe.hasNext(); ) {
-                SourceFile src = (SourceFile) srcFileITe.next();
+        for (UISample uiSample : UISample.all()) {
+            for (SourceFile src : uiSample.getSourceFiles()) {
                 if (src.name.contains("groovy")) {
                     r.add(uiSample);
                     break;
@@ -99,14 +95,10 @@ public abstract class UISample implements ExtensionPoint, Action, Describable<UI
     }
 
     public static List<UISample> getOtherSamples() {
-        ExtensionList<UISample> list = Jenkins.getInstance().getExtensionList(UISample.class);
         List<UISample> r = new ArrayList<UISample>();
         OUTER:
-        for (Iterator<UISample> ite = list.iterator(); ite.hasNext(); ) {
-            UISample uiSample = ite.next();
-            List<SourceFile> sourceFiles = uiSample.getSourceFiles();
-            for (Iterator<SourceFile> srcFileITe = sourceFiles.iterator(); srcFileITe.hasNext(); ) {
-                SourceFile src = (SourceFile) srcFileITe.next();
+        for (UISample uiSample : UISample.all()) {
+            for (SourceFile src : uiSample.getSourceFiles()) {
                 if (src.name.contains("groovy")) {
                     r.add(uiSample);
                     continue OUTER;