@Override
  public String getActionDescription() {
    return "pull image manifest for "
        + registryEndpointRequestProperties.getServerUrl()
        + "/"
        + registryEndpointRequestProperties.getImageName()
        + ":"
        + imageQualifier;
  }
Parses the response body into a {@link ManifestAndDigest}.
jib-core/src/main/java/com/google/cloud/tools/jib/registry/AbstractManifestPuller.java