Check the kind of node.
A KindTest is one of the two forms of a
NodeTest. In a step expression it can test the selected nodes in
the following ways:
test whether the nodes are of a specific kind:
ProcessingInstructionTest and CommentTest,
select the text node children (TextTest),
test for any kind of node (AnyKindTest),
See the pages of the respective tests for examples.
The following construct(s) refer to this construct:
