Code Snippets in MEF Editor extension VS2012

I am trying to implement code snippets with a MEF editor extension, I followed the walkthrough "Implementing Code Snippets" from the link: http://msdn.microsoft.com/en-us/library/ff926100(v=vs.110).aspx
The implementation is based on the walkthrough Displaying Statement Completion. This feature works fine.
The first section of "Implementing Code Snippets" is "Creating and Registering Code Snippets" which does not work. At the end of the section is the step 8:
Build and run the project. In the experimental instance of Visual Studio that starts when the project is run, the snippet you just registered
should be displayed in the Code Snippets Manager under
the TestSnippets language.
There are no errors, but the Code Snippets Manager does not display the TestSnippets language, and as a consequence the snippets are not there. I have been stuck for a few weeks now with this, and could not find resources to understand the issue.
Any idea on how to overcome this issue will be much appreciated.
Thanks

Hi,
I have to say that I can reproduce your issue on my machine via the steps provided in the walkthrough. However, I finally add that code snippets to C# language not that custom TestSnippets language.
Here are some modifications which are made on my side, maybe these listed items can be helpful for you to trouble-shoot your issue:
1). Delete the following line from the test.snippet file.
<?xml version="1.0" encoding="utf-8" ?>
2). Edit the test.snippet file, set <Code Language="CSharp">
3). Edit the SnippetIndex.xml file, set <Language Lang="CSharp" Guid="{694DD9B6-B865-4C5B-AD85-86356E9C88DC}">
4). Edit the SnippetUtilities class, and set
internal const string LanguageServiceGuidStr = "694DD9B6-B865-4C5B-AD85-86356E9C88DC";
5). Then build and run your project again. And this time you should get the snippet under C# language.
Thanks.
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Hope this explains to all the people who are struggling with JSSE..
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