The Cocoa formatters now provide error messages for many of the common things-went-wrong situations. Previously they would say nothing or log failures to the Python console

llvm-svn: 152673
diff --git a/lldb/examples/summaries/cocoa/cache.py b/lldb/examples/summaries/cocoa/cache.py
index 01a79a4..ea8df59 100644
--- a/lldb/examples/summaries/cocoa/cache.py
+++ b/lldb/examples/summaries/cocoa/cache.py
@@ -1,3 +1,10 @@
+"""
+Objective-C runtime wrapper for use by LLDB Python formatters
+
+part of The LLVM Compiler Infrastructure
+This file is distributed under the University of Illinois Open Source
+License. See LICENSE.TXT for details.
+"""
 import metrics
 
 class Cache: