pop specific

lib/android/app/src/main/java/com/reactnativenavigation/react/NavigationModule.java

@@ -59,7 +59,7 @@ public class NavigationModule extends ReactContextBaseJavaModule {
 		handle(new Runnable() {
 			@Override
 			public void run() {
-				navigator().pop(onContainerId);
+				navigator().popSpecific(onContainerId);
 			}
 		});
 	}

lib/android/app/src/main/java/com/reactnativenavigation/viewcontrollers/Navigator.java

@@ -80,7 +80,17 @@ public class Navigator extends ParentController {
 		if (from != null) {
 			StackController parentStackController = from.getParentStackController();
 			if (parentStackController != null) {
-				parentStackController.pop(from);
+				parentStackController.pop();
+			}
+		}
+	}
+
+	public void popSpecific(final String id) {
+		ViewController from = findControllerById(id);
+		if (from != null) {
+			StackController parentStackController = from.getParentStackController();
+			if (parentStackController != null) {
+				parentStackController.popSpecific(from);
 			}
 		}
 	}

lib/android/app/src/main/java/com/reactnativenavigation/viewcontrollers/StackController.java

@@ -42,7 +42,7 @@ public class StackController extends ParentController {
 		getView().addView(previousTop.getView());
 	}
 
-	public void pop(final ViewController childController) {
+	public void popSpecific(final ViewController childController) {
 		if (stack.isTop(childController.getId())) {
 			pop();
 		} else {

lib/android/app/src/test/java/com/reactnativenavigation/viewcontrollers/NavigatorTest.java

@@ -132,6 +132,24 @@ public class NavigatorTest extends BaseTest {
 		assertThat(stack2.getChildControllers()).containsOnly(child2, child3);
 	}
 
+	@Test
+	public void popSpecific() throws Exception {
+		BottomTabsController bottomTabsController = new BottomTabsController(activity, "tabsController");
+		StackController stack1 = new StackController(activity, "stack1");
+		StackController stack2 = new StackController(activity, "stack2");
+		stack1.push(child1);
+		stack2.push(child2);
+		stack2.push(child3);
+		SimpleViewController child4 = new SimpleViewController(activity, "child4");
+		stack2.push(child4);
+		bottomTabsController.setTabs(Arrays.<ViewController>asList(stack1, stack2));
+		uut.setRoot(bottomTabsController);
+
+		uut.popSpecific(child2.getId());
+
+		assertThat(stack2.getChildControllers()).containsOnly(child4, child3);
+	}
+
 	@Test
 	public void popTo_FromCorrectStackUpToChild() throws Exception {
 		BottomTabsController bottomTabsController = new BottomTabsController(activity, "tabsController");

lib/android/app/src/test/java/com/reactnativenavigation/viewcontrollers/StackControllerTest.java

@@ -158,7 +158,7 @@ public class StackControllerTest extends BaseTest {
 	public void popSpecificWhenTopIsRegularPop() throws Exception {
 		uut.push(child1);
 		uut.push(child2);
-		uut.pop(child2);
+		uut.popSpecific(child2);
 		assertContainsOnlyId(child1.getId());
 		assertHasSingleChildViewOfController(child1);
 	}
@@ -169,7 +169,7 @@ public class StackControllerTest extends BaseTest {
 		uut.push(child2);
 		assertHasSingleChildViewOfController(child2);
 
-		uut.pop(child1);
+		uut.popSpecific(child1);
 		assertContainsOnlyId(child2.getId());
 		assertHasSingleChildViewOfController(child2);
 	}