The scope-var access chain a node spells, if it is one: a Parameter root
with any run of attribute/element accesses on top ($fields.doc.title,
$activities[0].status). Group wrapping is transparent. undefined for
anything else — including chains crossing a deref, whose tail lives on a
dataset document rather than the scope.
The scope-var access chain a node spells, if it is one: a
Parameterroot with any run of attribute/element accesses on top ($fields.doc.title,$activities[0].status). Group wrapping is transparent.undefinedfor anything else — including chains crossing a deref, whose tail lives on a dataset document rather than the scope.