This operation is a no-op.
The NodeIterator.expandEntityReferences read-only property returns a Boolean flag indicating whether or not the children of entity reference nodes are visible to the NodeIterator.
The NodeIterator.filter read-only method returns a NodeFilter object, that is an object implement an acceptNode(node) method, used to screen nodes.
The NodeIterator.nextNode() method returns the next node in the set represented by the NodeIterator and advances the position of the iterator within the set. The first call to nextNode() returns the first node in the set.
The NodeIterator.previousNode() method returns the previous node in the set represented by the NodeIterator and moves the position of the iterator backwards within the set.
The NodeIterator.root read-only property represents the Node that is the root of what the NodeIterator traverses.
Returns an unsigned long being a bitmask made of constants describing the types of Node that must to be presented.