pprof软件包中的源信息

When having open-source Go libraries their code local and running pprof, how could you actually ask pprof to inspect the source of those packages too?

I want to look into the Get call of the sessions library, which then goes into Gorilla's sessions.

This is, obviously, the output:

(pprof) list sessions
Total: 7.73s
No source information for github.com/gin-gonic/contrib/sessions.(*session).Get
No source information for github.com/gin-gonic/contrib/sessions.(*session).Session
No source information for github.com/gin-gonic/contrib/sessions.Sessions.func1
(pprof)