The XpeProperties type exposes the following members.
The consumer id associated with the Xpe; this is used mainly to de-multiplex at the subscriber. The default is NULL_CONSUMERID.
The xpath expression to subscribe to.
If this value is set true, the Xpe becomes a filter.
Represents the manifest of namespaces used in this key. Key is the namespace alias and the value is its id (usually a uri).