/// <summary>
 /// Verify whether two faces belong to a same person or whether one face
 /// belongs to a person.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='faceId1'>
 /// FaceId of the first face, comes from Face - Detect
 /// </param>
 /// <param name='faceId2'>
 /// FaceId of the second face, comes from Face - Detect
 /// </param>
 /// <param name='cancellationToken'>
 /// The cancellation token.
 /// </param>
 public static async Task <VerifyResult> VerifyFaceToFaceAsync(this IFaceOperations operations, System.Guid faceId1, System.Guid faceId2, CancellationToken cancellationToken = default(CancellationToken))
 {
     using (var _result = await operations.VerifyFaceToFaceWithHttpMessagesAsync(faceId1, faceId2, null, cancellationToken).ConfigureAwait(false))
     {
         return(_result.Body);
     }
 }