Allow query engine to report full hierarchy of selected fields

Likely as an extra option.

Recently a customer has requested the ability for the query output to include the full "path" of a selected output.

i.e.:
doc {
firstlevel{
secondlevel

}
}

When selecting "field1", the output should look like firstlevel{secondlevel{field1}}

This is already possible when the full path is known by the calling application, but there are functions like WITHIN that allow the query engine to "find" a given field within an unknown hierarchy. This enhancement would be to cover those cases.