Unable to get IDfmCustomizedRendererPartProvider example to work

[Stoffelche]

I am trying to get the example described in "Customize DFM Engine" to work. But the plugin is not being loaded at all.
I don't know what to do. I generated a class library project named TestPlugin targetin core 6.0 and added the 2 classes as described. Then I copied the output files (trying including the Microsoft.DocAsCode files and not including them) to a folder x/plugins below the folder where my docfx.json is.

Then I put
"template": [ "default", "x" ], in doxfx.json.
But nothing happens.
Markdown engine is dfm, so this is not the cause.
Some help would be highly appreciated, as I am stuck.
I am starting docfx from debugger, but was unable to find a location, where to set a breakpoint, in order to find out why it does not work.

[paulushub]

dfm engine is depreciated.

[Stoffelche]

I am using 2.6. Why should it be deprecated?

[Stoffelche]

And else, how can I proceed to process a custom code block in a md-file?

[paulushub]

I am using 2.6. Why should it be deprecated?

dfm was a Microsoft implementation of the Markdown parser for the DocFX and is not as complete as the markdig.
Some features in DocFX requires the markdig, so there is no need to keep dfm.

And else, how can I proceed to process a custom code block in a md-file?

Look into the markdig, it already provides a lot of extensions to many known cases.
If you still need a custom processing, then consider writing a plugin/extension to the markdig.

[Stoffelche]

Thank you for your reply, I really appreciate your support.
I have written a tool, that generates plantuml code for inheritance diagrams for c# types from roslyn compilation.
Now I wanted to use and enhance the https://github.com/KevReed/DocFx.Plugins.PlantUml plugin to also support plantuml include files and replace them with svg generated from the plantuml code.
But the plugin would not work with 2.60. So I resorted to the basic example, on which this tool is based, but could not get it running either.
So now I am stuck here.
If I don't find a solution integrated in docfx, I am going to try using https://github.com/KevReed/PlantUml.Net and some custom preprocessing to replace some custom file link in my md files with svg, hoping that markdig copes with inline svg inside the md files.
In a later step I want to try make the diagram items (types and members) xref enabled, in order to link with api documentation, but I don't know whether xref will be resolved inside svg.