1 files changed, 18 insertions, 1 deletions
diff --git a/xml/relaxng/src/org/intellij/plugins/relaxNG/model/resolve/RelaxSymbolIndex.java b/xml/relaxng/src/org/intellij/plugins/relaxNG/model/resolve/RelaxSymbolIndex.java
index eede27a5a2b9..a00d40dd1172 100644
--- a/xml/relaxng/src/org/intellij/plugins/relaxNG/model/resolve/RelaxSymbolIndex.java
+++ b/xml/relaxng/src/org/intellij/plugins/relaxNG/model/resolve/RelaxSymbolIndex.java
@@ -1,3 +1,18 @@
+/*
+ * Copyright 2000-2014 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.intellij.plugins.relaxNG.model.resolve;
 
 import com.intellij.ide.highlighter.XmlFileType;
@@ -129,16 +144,18 @@ public class RelaxSymbolIndex extends ScalarIndexExtension<String> {
     };
   }
 
+  @NotNull
   @Override
   public KeyDescriptor<String> getKeyDescriptor() {
     return new EnumeratorStringDescriptor();
   }
 
+  @NotNull
   @Override
   public FileBasedIndex.InputFilter getInputFilter() {
     return new DefaultFileTypeSpecificInputFilter(StdFileTypes.XML, RncFileType.getInstance()) {
       @Override
-      public boolean acceptInput(VirtualFile file) {
+      public boolean acceptInput(@NotNull VirtualFile file) {
         return !(file.getFileSystem() instanceof JarFileSystem);
       }
     };