dataflow to/from containers support

java/java-tests/testData/codeInsight/slice/backward/ListTrackToArray.java

@@ -0,0 +1,31 @@
+package x;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class ListTack {
+    void f(String <caret>s) {
+    }
+    void g(List<String> <flown111>l) {
+        l.add(1, <flown112>"uuu");
+
+//        f(l.get(0));
+//        f(l.remove(0));
+        Object[] array = <flown11>l.toArray();
+        f((String)<flown1>array[0]);
+    }
+    void h() {
+        List<String> g = <flown111131>new ArrayList<String>();
+        g.add(<flown111132>"zzz");
+
+
+        List<String> list = <flown11111>new ArrayList<String>();
+        list.add(<flown11112>"xxx");
+
+        list.addAll(<flown11113>g);
+
+        g(<flown1111>list);
+    }
+
+}
+