Prepare repository for merge into master

j2k/tests/testData/ast/assignmentExpression/file/nullability.jav

@@ -0,0 +1,9 @@
+import java.util.BitSet;
+
+class Foo {
+  void foo(BitSet o) {
+    BitSet o2 = o;
+    int foo = 0;
+    foo = o2.size();
+  }
+}

j2k/tests/testData/ast/assignmentExpression/file/nullability.kt

@@ -0,0 +1,8 @@
+import java.util.BitSet
+open class Foo() {
+open fun foo(o : BitSet?) : Unit {
+var o2 : BitSet? = o
+var foo : Int = 0
+foo = o2?.size()!!
+}
+}