o validate XML representations of the resources. 
When validating a resource, you can nominate one of the following schema: 
</p>
<ul>
 <li>fhir-all.xsd: links in all the individual modular schemas</li>
 <li>fhir-single.xsd: a single large file, mainly provided for schema processors that can't support circular references</li>
</ul>
<p>
In addition, the validation schema includes schematron
that can be initiated with transform "iso_svrl_for_xslt2.xsl" included in the 
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