Saxon in Java: XSLT for CSV to XML

Mostly continued from this question: XSLT: CSV (or Flat File, or Plain Text) to XML

So, I have an XSLT from here: http://andrewjwelch.com/code/xslt/csv/csv-to-xml_v2.html

And it converts a CSV file to an XML document. It does this when used with the following command on the command line:

java -jar saxon9he.jar -xsl:csv-to-xml.csv -it:main -o:output.xml

So now the question becomes: How do I do I do this in my Java code?

Right now I have code that looks like this:

TransformerFactory transformerFactory = TransformerFactory.newInstance();
 StreamSource xsltSource = new StreamSource(new File("location/of/csv-to-xml.xsl"));
 Transformer transformer = transformerFactory.newTransformer(xsltSource);
 StringWriter stringWriter = new StringWriter();
 transformer.transform(documentSource, new StreamResult(stringWriter));
 String transformedDocument = stringWriter.toString().trim();
 

(The Transformer is an instance of net.sf.saxon.Controller.)

The trick on the command line is to specify "-it:main" to point right at the named template in the XSLT. This means you don't have to provide the source file with the "-s" flag.

The problem starts again on the Java side. Where/how would I specify this "-it:main"? Wouldn't doing so break other XSLT's that don't need that specified? Would I have to name every template in every XSLT file "main?" Given the method signature of Transformer.transform(), I have to specify the source file, so doesn't that defeat all the progress I've made in figuring this thing out?

Edit: I found the s9api hidden inside the saxon9he.jar, if anyone is looking for it.

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