extract method: shorten qualified names for new return type (IDEA-155518)

java/java-tests/testData/refactoring/extractMethod/ShortenClassRefsInNewReturnType.java

@@ -0,0 +1,8 @@
+import java.util.ArrayList;
+
+class Test {
+  Object foo() {
+    Object list = <selection>new ArrayList<String>();</selection>
+    return list;
+  }
+}

java/java-tests/testData/refactoring/extractMethod/ShortenClassRefsInNewReturnType_after.java

@@ -0,0 +1,16 @@
+import org.jetbrains.annotations.NotNull;
+
+import java.util.ArrayList;
+import java.util.Collection;
+
+class Test {
+  Object foo() {
+    Object list = newMethod();
+    return list;
+  }
+
+    @NotNull
+    private Collection newMethod() {
+        return new ArrayList<String>();
+    }
+}