Optional ReadonlylocalOptional ReadonlynamespaceMatches the namespaceUri of the element or attribute.
If null, this will only match against a null namespace. If undefined, this will default to the namespace of the parent element for elements, or null for attributes.
Note that attributes do not inherit default namespaces as elements do.
Matches the
QName.localPartof the element. If undefined, this will match against the property name from XmlRules.