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Hi, I am trying to create custom parameter and data. I found some pieces of thing on the forum that help me to create my parameter but now I have an error message that I can't solve: "Error 1 The type 'TEST.SomeStuffs' cannot be used as type parameter 'T' in the generic type or method 'Grasshopper.Kernel.GH_Param<T>'. There is no implicit reference conversion from 'TEST.SomeStuffs' to 'Gras…