stream api: fix primitive boxing (IDEA-151494)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/afterPrimitive.java

@@ -0,0 +1,9 @@
+// "Replace with collect" "true"
+import java.util.List;
+import java.util.stream.Collectors;
+
+class Sample {
+  public void some(List<String> from, List<Integer> to) {
+      to.addAll(from.stream().map(String::length).collect(Collectors.toList()));
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/beforePrimitive.java

@@ -0,0 +1,10 @@
+// "Replace with collect" "true"
+import java.util.List;
+
+class Sample {
+  public void some(List<String> from, List<Integer> to) {
+    for (String key : fr<caret>om) {
+      to.add(key.length());
+    }
+  }
+}