do not insert annotations when classes are not accessible

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/overrideMethod/afterSkipUnresolvedNullable.java

@@ -0,0 +1,13 @@
+import org.jetbrains.annotations.Nullable;
+
+// "Implement method 'foo'" "true"
+abstract class Test {
+  public abstract void foo(@org.jetbrains.annotations.Nullable String a);
+}
+
+class TImple extends Test {
+    @Override
+    public void foo(@Nullable String a) {
+        <selection>//To change body of implemented methods use File | Settings | File Templates.</selection>
+    }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/overrideMethod/beforeSkipUnresolvedNullable.java

@@ -0,0 +1,6 @@
+// "Implement method 'foo'" "true"
+abstract class Test {
+  public abstract void f<caret>oo(@org.jetbrains.annotations.Nullable String a);
+}
+
+class TImple extends Test {}