async handle({ namespace, packageName }) {
    const { downloads } = await this.fetchPackageMetrics({
      namespace,
      packageName,
    })
    return renderDownloadsBadge({ downloads })
  }
@param {object} pkg - Package specifier
@param {string} pkg.namespace - the package namespace
@param {string} pkg.packageName - the package name
@returns {Promise<object>} - Promise containing the rendered badge payload