Entity framework POCO template missing (i am using visual studio 2010 professional )

When I create a .edmx file and I hit Add code generation item the POCO template is missing, I can only see Entity Object 开发者_运维知识库Generator and Self-Tracking Entities Generator.

What am I missing?

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It's a Visual Studio extension you have to install through the Extension Manager in the tools menu. It's full name is ADO.NET C# POCO Entity Generator.