TAPL: Little cleanup

Change-Id: I254ad6679b19700bd86c49a2acea3de7eae90fb7
diff --git a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
index a4711f5..8f4bef0 100644
--- a/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
+++ b/tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java
@@ -541,25 +541,22 @@
 
     @NonNull
     UiObject2 waitForLauncherObject(String resName) {
-        final BySelector selector = getLauncherObjectSelector(resName);
-        final UiObject2 object = mDevice.wait(Until.findObject(selector), WAIT_TIME_MS);
-        assertNotNull("Can't find a launcher object; selector: " + selector, object);
-        return object;
+        return waitForObjectBySelector(getLauncherObjectSelector(resName));
     }
 
     @NonNull
     UiObject2 waitForLauncherObjectByClass(String clazz) {
-        final BySelector selector = getLauncherObjectSelectorByClass(clazz);
-        final UiObject2 object = mDevice.wait(Until.findObject(selector), WAIT_TIME_MS);
-        assertNotNull("Can't find a launcher object; selector: " + selector, object);
-        return object;
+        return waitForObjectBySelector(getLauncherObjectSelectorByClass(clazz));
     }
 
     @NonNull
     UiObject2 waitForFallbackLauncherObject(String resName) {
-        final BySelector selector = getFallbackLauncherObjectSelector(resName);
+        return waitForObjectBySelector(getFallbackLauncherObjectSelector(resName));
+    }
+
+    private UiObject2 waitForObjectBySelector(BySelector selector) {
         final UiObject2 object = mDevice.wait(Until.findObject(selector), WAIT_TIME_MS);
-        assertNotNull("Can't find a fallback launcher object; selector: " + selector, object);
+        assertNotNull("Can't find a launcher object; selector: " + selector, object);
         return object;
     }