add toString method to GenericPropertyNode

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1144283 13f79535-47bb-0310-9956-ffa450edef68

src/scratchpad/src/org/apache/poi/hwpf/model/GenericPropertyNode.java

@@ -30,5 +30,15 @@ public final class GenericPropertyNode
     return (byte[])_buf;
   }
 
-
+    @Override
+    public String toString()
+    {
+        return "GenericPropertyNode ["
+                + getStart()
+                + "; "
+                + getEnd()
+                + ") "
+                + ( getBytes() != null ? getBytes().length + " byte(s)"
+                        : "null" );
+    }
 }