code: def query_package_version_metrics(self, package_version_id_query, feed_id, package_id, project=None):
          
          route_values = {}
          if project is not None:
              route_values['project'] = self._serialize.url('project', project, 'str')
          if feed_id is not None:
              route_values['feedId'] = self._serialize.url('feed_id', feed_id, 'str')
          if package_id is not None:
              route_values['packageId'] = self._serialize.url('package_id', package_id, 'str')
          content = self._serialize.body(package_version_id_query, 'PackageVersionMetricsQuery')
          response = self._send(http_method='POST',
                                location_id='e6ae8caa-b6a8-4809-b840-91b2a42c19ad',
                                version='5.1-preview.1',
                                route_values=route_values,
                                content=content)
          return self._deserialize('[PackageVersionMetrics]', self._unwrap_collection(response))
docs: QueryPackageVersionMetrics.
          [Preview API]
          :param :class:`<PackageVersionMetricsQuery> <azure.devops.v5_1.feed.models.PackageVersionMetricsQuery>` package_version_id_query:
          :param str feed_id:
          :param str package_id:
          :param str project: Project ID or project name
          :rtype: [PackageVersionMetrics]