Use XPath/XQuery to do this. Refer to the examples page for an example on how to do this.
Returns the non-inclusive descendants of the given node matching the given spec.
Refer to blueprintQuery for more information on how to import and use this function.
The blueprint in which to consider the nodes
The parent node under which to search
Node specification, as accepted by fontoxml-dom-utils' createNodeFilter.
Whether to continue the search under matching nodes Defaults to false, meaning only top-level matches are returned.
The matching descendants of parentNode