code: def get_package_version(self, feed_id, package_name, package_version, show_deleted=None):
          
          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')
          query_parameters = {}
          if show_deleted is not None:
              query_parameters['showDeleted'] = self._serialize.query('show_deleted', show_deleted, 'bool')
          response = self._send(http_method='GET',
                                location_id='d146ac7e-9e3f-4448-b956-f9bb3bdf9b2e',
                                version='5.0-preview.1',
                                route_values=route_values,
                                query_parameters=query_parameters)
          return self._deserialize('Package', response)
docs: GetPackageVersion.
          [Preview API] Get information about a 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.
          :param bool show_deleted: True to show information for deleted package versions.
          :rtype: :class:`<Package> <azure.devops.v5_0.py_pi_api.models.Package>`