Sub-module call graph visualization problem.

[ruoyiqiao]

Thx for great tool!
I’m new to Go and have been trying to visualize the call graph of the whole project. Currently, I’ve managed to generate the call graph at the root working directory (main module). However, this visualization only includes functions in the main module and doesn’t extend recursively to submodule function calls. When I tried specifying the target module as main/gfs or main/gfs/master, I encountered an error stating "no main packages."

Could you please advise on how to generate a recursive call graph that includes submodules or clarify the correct usage for this scenario?