code: def get_package_info(self, feed_id, package_name, package_version):
          
          route_values = {}
          if feed_id is not None:
              route_values['feedId'] = self._serialize.url('feed_id', feed_id, 'str')
          if package_name is not None:
              route_values['packageName'] = self._serialize.url('package_name', package_name, 'str')
          if package_version is not None:
              route_values['packageVersion'] = self._serialize.url('package_version', package_version, 'str')
          response = self._send(http_method='GET',
                                location_id='ed579d62-67c9-4271-be66-9b029af5bcf9',
                                version='5.0-preview.1',
                                route_values=route_values)
          return self._deserialize('Package', response)
docs: GetPackageInfo.
          [Preview API] Get information about an unscoped package version.
          :param str feed_id: Name or ID of the feed.
          :param str package_name: Name of the package.
          :param str package_version: Version of the package.
          :rtype: :class:`<Package> <azure.devops.v5_0.npm.models.Package>`