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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def process_annotation(self, ann):
 """Process metadata annotation."""

        tmpl = self.xsl_template("@" + self.qname(ann))
        ET.SubElement(tmpl, "param", name="level", select="0")
        ct = self.xsl_calltemplate("leaf", tmpl)
        ET.SubElement(ct, "with-param", name="level", select="$level")
        self.xsl_withparam("nsid", ann.i_module.i_modulename + ":", ct)
        self.type_param(ann, ct)