private List <Blob> OcrBlobs()
        {
            // Create a collection of required OCR blobs:
            var blobs = new List <Blob>();

            // Language detector blobs of the Scanbot SDK. (see "language_classifier_blob_path" in AndroidManifest.xml!)
            foreach (var b in blobFactory.LanguageDetectorBlobs())
            {
                blobs.Add(b);
            }

            // OCR blobs of languages (see "ocr_blobs_path" in AndroidManifest.xml!)
            foreach (var lng in ocrLanguages)
            {
                foreach (var b in blobFactory.OcrLanguageBlobs(lng))
                {
                    blobs.Add(b);
                }
            }

            return(blobs);
        }