made JetVisitorVoid extends JetVisitor<Void, Void>

compiler/frontend/src/org/jetbrains/jet/lang/psi/JetElementImpl.java

@@ -44,8 +44,8 @@ public class JetElementImpl extends ASTWrapperPsiElement implements JetElement {
 
     @Override
     public final void accept(@NotNull PsiElementVisitor visitor) {
-        if (visitor instanceof JetVisitorVoid) {
+        if (visitor instanceof JetVisitor) {
-            accept((JetVisitorVoid) visitor);
+            accept((JetVisitor) visitor, null);
         }
         else {
             visitor.visitElement(this);
@@ -57,11 +57,6 @@ public class JetElementImpl extends ASTWrapperPsiElement implements JetElement {
         JetPsiUtil.visitChildren(this, visitor, data);
     }
 
-    @Override
-    public void accept(@NotNull JetVisitorVoid visitor) {
-        visitor.visitJetElement(this);
-    }
-    
     @Override
     public <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
         return visitor.visitJetElement(this, data);

compiler/frontend/src/org/jetbrains/jet/lang/psi/JetElementImplStub.java

@@ -50,8 +50,8 @@ public class JetElementImplStub<T extends StubElement> extends StubBasedPsiEleme
 
     @Override
     public final void accept(@NotNull PsiElementVisitor visitor) {
-        if (visitor instanceof JetVisitorVoid) {
+        if (visitor instanceof JetVisitor) {
-            accept((JetVisitorVoid) visitor);
+            accept((JetVisitor) visitor, null);
         }
         else {
             visitor.visitElement(this);
@@ -69,11 +69,6 @@ public class JetElementImplStub<T extends StubElement> extends StubBasedPsiEleme
         }
     }
 
-    @Override
-    public void accept(@NotNull JetVisitorVoid visitor) {
-        visitor.visitJetElement(this);
-    }
-
     @Override
     public <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
         return visitor.visitJetElement(this, data);

compiler/frontend/src/org/jetbrains/jet/lang/psi/JetFile.java

@@ -129,8 +129,8 @@ public class JetFile extends PsiFileBase implements JetDeclarationContainer, Jet
 
     @Override
     public void accept(@NotNull PsiElementVisitor visitor) {
-        if (visitor instanceof JetVisitorVoid) {
+        if (visitor instanceof JetVisitor) {
-            accept((JetVisitorVoid) visitor);
+            accept((JetVisitor) visitor, null);
         }
         else {
             visitor.visitFile(this);
@@ -142,11 +142,6 @@ public class JetFile extends PsiFileBase implements JetDeclarationContainer, Jet
         JetPsiUtil.visitChildren(this, visitor, data);
     }
 
-    @Override
-    public void accept(@NotNull JetVisitorVoid visitor) {
-        visitor.visitJetFile(this);
-    }
-
     @Override
     public <R, D> R accept(@NotNull JetVisitor<R, D> visitor, D data) {
         return visitor.visitJetFile(this, data);