Is there any way to read Processing instruction content with XMLDOM

I am having problem to read the content of PRocessing instructions with PLSQL XMLDOM.
Would appriciate if someone could help. with code sample.

DOM doesn't have any direct way to select nodes. Processing-Instructions are child nodes to the corresponding node. If you know the tree structure you can traverse the tree and goto the particular PI node.
The easiest way is to XPath expressions. The following example retrieves all the Processing Instructions in the document.
XSLProcessor.selectNodes(document, '//processing-instruction()')

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