use standard base class

idea/src/org/jetbrains/jet/plugin/JetQuickDocumentationProvider.java

@@ -1,8 +1,7 @@
 package org.jetbrains.jet.plugin;
 
-import com.intellij.lang.documentation.DocumentationProvider;
+import com.intellij.lang.documentation.AbstractDocumentationProvider;
 import com.intellij.psi.PsiElement;
-import com.intellij.psi.PsiManager;
 import com.intellij.psi.util.PsiTreeUtil;
 import org.jetbrains.jet.lang.descriptors.DeclarationDescriptor;
 import org.jetbrains.jet.lang.psi.JetFile;
@@ -11,13 +10,10 @@ import org.jetbrains.jet.lang.resolve.AnalyzingUtils;
 import org.jetbrains.jet.lang.resolve.BindingContext;
 import org.jetbrains.jet.resolve.DescriptorRenderer;
 
-import java.util.Collections;
-import java.util.List;
-
 /**
  * @author abreslav
  */
-public class JetQuickDocumentationProvider implements DocumentationProvider {
+public class JetQuickDocumentationProvider extends AbstractDocumentationProvider {
 
     @Override
     public String getQuickNavigateInfo(PsiElement element, PsiElement originalElement) {
@@ -58,24 +54,4 @@ public class JetQuickDocumentationProvider implements DocumentationProvider {
     private String render(DeclarationDescriptor declarationDescriptor) {
         return DescriptorRenderer.HTML.render(declarationDescriptor);
     }
-
-    @Override
-    public List<String> getUrlFor(PsiElement element, PsiElement originalElement) {
-        return Collections.emptyList();
-    }
-
-    @Override
-    public String generateDoc(PsiElement element, PsiElement originalElement) {
-        return "<no doc>";
-    }
-
-    @Override
-    public PsiElement getDocumentationElementForLookupItem(PsiManager psiManager, Object object, PsiElement element) {
-        return null;
-    }
-
-    @Override
-    public PsiElement getDocumentationElementForLink(PsiManager psiManager, String link, PsiElement context) {
-        return null;
-    }
 }