show class in PsiReferenceBase.toString (for diagnostics in EA-139530 -...

show class in PsiReferenceBase.toString (for diagnostics in EA-139530 - assert: IdempotenceChecker.checkEquivalence)

platform/core-api/src/com/intellij/psi/PsiReferenceBase.java

@@ -222,6 +222,6 @@ public abstract class PsiReferenceBase<T extends PsiElement> implements PsiRefer
 
   @Override
   public String toString() {
-    return myElement + ":" + myRangeInElement;
+    return getClass().getName() + "(" + myElement + ":" + myRangeInElement + ")";
   }
 }
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