The element type itself.
The element type itself. It must be restricted to a sub-type of the query API trait in question.
Concrete element classes will restrict this type to that element class itself.
The node type, that is a super-type of the element type, but also of corresponding text node types etc.
The node type, that is a super-type of the element type, but also of corresponding text node types etc.
Returns all child nodes, of any kind of node (element node, text node etc.).
This element itself.
This element itself.
API trait for elements that can be asked for their child nodes, of any node kind.