Fix TypeConstructor#getSupertypes() return type

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/DescriptorResolverUtils.java

@@ -60,7 +60,8 @@ public final class DescriptorResolverUtils {
         return kind == ClassKind.CLASS || kind == ClassKind.TRAIT || kind == ClassKind.ENUM_CLASS;
     }
 
-    public static Collection<? extends JetType> getSupertypes(@NotNull ClassOrNamespaceDescriptor classOrNamespaceDescriptor) {
+    @NotNull
+    public static Collection<JetType> getSupertypes(@NotNull ClassOrNamespaceDescriptor classOrNamespaceDescriptor) {
         if (classOrNamespaceDescriptor instanceof ClassDescriptor) {
             return ((ClassDescriptor) classOrNamespaceDescriptor).getTypeConstructor().getSupertypes();
         }

compiler/frontend/src/org/jetbrains/jet/lang/resolve/DescriptorUtils.java

@@ -259,7 +259,7 @@ public class DescriptorUtils {
 
     @NotNull
     public static List<ClassDescriptor> getSuperclassDescriptors(@NotNull ClassDescriptor classDescriptor) {
-        Collection<? extends JetType> superclassTypes = classDescriptor.getTypeConstructor().getSupertypes();
+        Collection<JetType> superclassTypes = classDescriptor.getTypeConstructor().getSupertypes();
         List<ClassDescriptor> superClassDescriptors = new ArrayList<ClassDescriptor>();
         for (JetType type : superclassTypes) {
             ClassDescriptor result = getClassDescriptorForType(type);

compiler/frontend/src/org/jetbrains/jet/lang/resolve/lazy/LazyClassDescriptor.java

@@ -346,7 +346,7 @@ public class LazyClassDescriptor extends ClassDescriptorBase implements LazyDesc
 
         @NotNull
         @Override
-        public Collection<? extends JetType> getSupertypes() {
+        public Collection<JetType> getSupertypes() {
             if (supertypes == null) {
                 if (resolveSession.isClassSpecial(DescriptorUtils.getFQName(LazyClassDescriptor.this))) {
                     this.supertypes = Collections.emptyList();

compiler/frontend/src/org/jetbrains/jet/lang/resolve/lazy/LazyTypeParameterDescriptor.java

@@ -180,7 +180,7 @@ public class LazyTypeParameterDescriptor implements TypeParameterDescriptor, Laz
             typeConstructor = new TypeConstructor() {
                 @NotNull
                 @Override
-                public Collection<? extends JetType> getSupertypes() {
+                public Collection<JetType> getSupertypes() {
                     return LazyTypeParameterDescriptor.this.getUpperBounds();
                 }
 

compiler/frontend/src/org/jetbrains/jet/lang/types/IntersectionTypeConstructor.java

@@ -47,7 +47,7 @@ public class IntersectionTypeConstructor extends AnnotatedImpl implements TypeCo
 
     @NotNull
     @Override
-    public Collection<? extends JetType> getSupertypes() {
+    public Collection<JetType> getSupertypes() {
         return intersectedTypes;
     }
 

compiler/frontend/src/org/jetbrains/jet/lang/types/TypeConstructor.java

@@ -33,7 +33,7 @@ public interface TypeConstructor extends Annotated {
     List<TypeParameterDescriptor> getParameters();
 
     @NotNull
-    Collection<? extends JetType> getSupertypes();
+    Collection<JetType> getSupertypes();
 
     boolean isSealed();
 

compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/BasicExpressionTypingVisitor.java

@@ -445,7 +445,7 @@ public class BasicExpressionTypingVisitor extends ExpressionTypingVisitor {
     ) {
         JetType result = null;
         JetType thisType = thisReceiver.getType();
-        Collection<? extends JetType> supertypes = thisType.getConstructor().getSupertypes();
+        Collection<JetType> supertypes = thisType.getConstructor().getSupertypes();
         TypeSubstitutor substitutor = TypeSubstitutor.create(thisType);
 
         JetTypeReference superTypeQualifier = expression.getSuperTypeQualifier();

compiler/frontend/src/org/jetbrains/jet/resolve/DescriptorRenderer.java

@@ -611,12 +611,12 @@ public class DescriptorRenderer implements Renderer<DeclarationDescriptor> {
                 renderTypeParameters(descriptor.getTypeConstructor().getParameters(), builder);
             }
             if (!descriptor.equals(KotlinBuiltIns.getInstance().getNothing())) {
-                Collection<? extends JetType> supertypes = descriptor.getTypeConstructor().getSupertypes();
+                Collection<JetType> supertypes = descriptor.getTypeConstructor().getSupertypes();
                 if (supertypes.isEmpty() || supertypes.size() == 1 && KotlinBuiltIns.getInstance().isAny(supertypes.iterator().next())) {
                 }
                 else {
                     builder.append(" : ");
-                    for (Iterator<? extends JetType> iterator = supertypes.iterator(); iterator.hasNext(); ) {
+                    for (Iterator<JetType> iterator = supertypes.iterator(); iterator.hasNext(); ) {
                         JetType supertype = iterator.next();
                         builder.append(renderType(supertype));
                         if (iterator.hasNext()) {

idea/src/org/jetbrains/jet/plugin/codeInsight/GotoSuperActionHandler.java

@@ -67,7 +67,7 @@ public class GotoSuperActionHandler implements CodeInsightActionHandler {
         Collection<? extends DeclarationDescriptor> superDescriptors;
         String message;
         if (descriptor instanceof ClassDescriptor) {
-            Collection<? extends JetType> supertypes = ((ClassDescriptor) descriptor).getTypeConstructor().getSupertypes();
+            Collection<JetType> supertypes = ((ClassDescriptor) descriptor).getTypeConstructor().getSupertypes();
             List<ClassDescriptor> superclasses = ContainerUtil.mapNotNull(supertypes, new Function<JetType, ClassDescriptor>() {
                 @Override
                 public ClassDescriptor fun(JetType type) {

js/js.translator/src/org/jetbrains/k2js/translate/declaration/ClassTranslator.java

@@ -182,7 +182,7 @@ public final class ClassTranslator extends AbstractTranslator {
 
     @NotNull
     private List<JsExpression> getSupertypesNameReferences() {
-        Collection<? extends JetType> supertypes = descriptor.getTypeConstructor().getSupertypes();
+        Collection<JetType> supertypes = descriptor.getTypeConstructor().getSupertypes();
         if (supertypes.isEmpty()) {
             return Collections.emptyList();
         }