return and highlight the most relevant child with BlockJoinQuery

[michael solomon]

Hi,
how can I *highlight* and *return* the most relevant child with
BlockJoinQuery.
for this:

> {!parent which="is_parent:*" score=max}(title:(terms)


I expect to get:

.
.
.
docs:[

{
   doc parent
   _childDocuments_:{the most relevant child}
}
{
   doc parent2
   _childDocuments_:{the most relevant child}
}
.
.
.

]
highlight:{

{doc parent: highlight from the children}
{doc parent: highlight from the children}

}

Thanks a lot,
Michae