[CONNECT Update 16 C++] DgnLinkManager::WriteLinkTree

There are two overloads of DgnLinkManager::WriteLinkTree...

StatusInt WriteLinkTree  (DgnLinkTreeR        linkTree)
StatusInt WriteLinkTree  (DgnLinkTreeR        linkTree,  
                          EditElementHandleR  elemHandle)  

The documentation is terse in either case: Write a link tree into the memory.  And, when it isn't terse, it's wrong: Returns the status of API in terms of True/false.  The return value is a StatusInt, not a bool.

Which is the preferred method?  What does the second version (with an EditElementHandle) do that the first version doesn't do?