code: def get_param_text(self, nid):
          
          r = []
          params = self.parameters.xpath('.//param[@ref-id="{}"]'.format(nid))
          if not params:
              return r
          for param in params:
              vnode = param.find('value')
              s = 'Parameter: {}, type:{}, value: {}'.format(param.attrib.get('name'),
                                                             vnode.attrib.get('type'),
                                                             param.findtext('value', default='No Value'))
              r.append(s)
          return r
docs: Get a list of parameters as text values for a given node id.
  
          :param nid: id to look for.
          :return: