deadlock with search under ref table lock (IDEA-161849)

java/java-analysis-api/src/com/intellij/codeInspection/reference/RefMethod.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2009 JetBrains s.r.o.
+ * Copyright 2000-2016 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.
@@ -75,6 +75,7 @@ public interface RefMethod extends RefJavaElement {
    *
    * @return true if the method is a test method, false otherwise.
    */
+  @Deprecated
   boolean isTestMethod();
 
   /**