erasure wildcards when generate overriding

(cherry picked from commit 58ced7b4e6be23577a1427c93a7b9c58a4edb5f3)

java/java-tests/testData/codeInsight/overrideImplement/afterErasureWildcard.java

@@ -0,0 +1,9 @@
+interface Generic<T> {
+  T foo();
+}
+
+class II implements Generic<?> {
+    public Object foo() {
+        <selection>return null;  //To change body of implemented methods use File | Settings | File Templates.</selection>
+    }
+}

java/java-tests/testData/codeInsight/overrideImplement/beforeErasureWildcard.java

@@ -0,0 +1,7 @@
+interface Generic<T> {
+  T foo();
+}
+
+class II implements Generic<?> {
+  <caret>
+}

java/java-tests/testSrc/com/intellij/codeInsight/OverrideImplementTest.java

@@ -61,6 +61,7 @@ public class OverrideImplementTest extends LightCodeInsightTestCase {
   public void testClone() { doTest(false); }
   public void testOnTheLineWithExistingExpression() { doTest(false); }
   public void testSimplifyObjectWildcard() { doTest(false); }
+  public void testErasureWildcard() { doTest(false); }
 
   public void testImplementExtensionMethods() { doTest8(false, true); }
   public void testDoNotImplementExtensionMethods() { doTest8(false, true); }