When true, a session without one of the authorised roles cannot browse the nodes
either: the structure itself is hidden. The default (false) leaves the structure
browsable by everyone, which is what the OPC UA conformance tests expect of the
mandatory children of the well-known roles; only the values are protected.
When true, a session without one of the authorised roles cannot browse the nodes either: the structure itself is hidden. The default (false) leaves the structure browsable by everyone, which is what the OPC UA conformance tests expect of the mandatory children of the well-known roles; only the values are protected.