https://issues.dlang.org/show_bug.cgi?id=13456

          Issue ID: 13456
           Summary: GCStats does not appear in the web site documentation
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P1
         Component: websites
          Assignee: nobody@puremagic.com
          Reporter: bugzilla@digitalmars.com

https://github.com/D-Programming-Language/druntime/blob/master/src/gc/stats.d

And neither does any of the callable GC functions.

https://dlang.org/phobos/core_memory.html

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