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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 _browse_body(self, search_id):
 """Return the browse XML body. The XML is formed by adding, to the envelope of the XML returned by ``self._base_body``, the following ``Body`` part: .. code :: xml <s:Body> <getMetadata xmlns="http://www.sonos.com/Services/1.1"> <id>root</id> <index>0</index> <count>100</count> </getMetadata> </s:Body> .. note:: The XML contains index and count, but the service does not seem to respect them, so therefore they have not been included as arguments. """

        xml = self._base_body()

        # Add the Body part
        XML.SubElement(xml, 's:Body')
        item_attrib = {
            'xmlns': 'http://www.sonos.com/Services/1.1'
        }
        search = XML.SubElement(xml[1], 'getMetadata', item_attrib)
        XML.SubElement(search, 'id').text = search_id
        # Investigate this index, count stuff more
        XML.SubElement(search, 'index').text = '0'
        XML.SubElement(search, 'count').text = '100'

        return XML.tostring(xml)