private function initTaxonomy()
	{
		// Sanity check
		if ( count( $this->instanceDocuments ) === 0 )
		{
			$this->log()->err( "There are no instance documents" );
			return false;
		}
		if ( $this->taxonomy === null ) return false;

		$xsd = pathinfo( $this->schemaFilename, PATHINFO_BASENAME );
		$this->taxonomy = $this->taxonomy->getTaxonomyForXSD( $xsd );

		return true;
	}