Names the kind of node at a path, such as 'rule', 'target', 'match' or 'expression', derived from the path.
Without the node, a document root or a policy set's child is answered as 'policy'; passing the node makes 'policySet' and 'reference' exact.
the dotted path
Optional
the node at the path, where the caller has it
the kind, 'unknown' when the path names nothing the editor knows
Names the kind of node at a path, such as 'rule', 'target', 'match' or 'expression', derived from the path.
Without the node, a document root or a policy set's child is answered as 'policy'; passing the node makes 'policySet' and 'reference' exact.