How to fix the error "Could not find the type or namespace name" Extensibility ""?

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Used - Visual Studio - 2019 Community.
 
I'm trying to create an add-in using the toolkit - "How to Create a MindManager 7 Add-in Using C #".
 
Step "3.2 Create a new project" - .
 
I did not find the "Shared Add-in".
 
I try to use - "Empty VSIX Project".
I added the class "Connect.cs".
 
I added code to the "Connect.cs" class.
 
I get the error: "Could not find the type or name of the "Extensibility" namespace (the using directive or assembly reference may be missing).".
 
Question.
1. Is it possible to create an add-in for MindManager using the "Empty VSIX Project"?
2. How to fix a mistake?



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Ivan

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Posted 2 weeks ago

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