# getMrz method

String getMrz()

Gets the value of the MRZ detected.

return Value of the MRZ detected. throws DocumentException An error has occurred during Document Library execution.

## Implementation

    String getMrz() {
      Pointer<Char> pMrz = nullptr;
      Pointer<Int> pMrzSize = calloc.allocate(1);
      pMrzSize[0] = -1;
      try {
        var err = documentSDK.id3DocumentMrzReadingResult_GetMrz(_pHandle.value, pMrz, pMrzSize);
        if (err == DocumentError.insufficientBuffer.value) {
          pMrz = calloc.allocate(pMrzSize.value);
          err = documentSDK.id3DocumentMrzReadingResult_GetMrz(_pHandle.value, pMrz, pMrzSize);
          if (err != DocumentError.success.value) {
            throw DocumentException(err);
          }
        }
        final vMrz = utf8.decode(Uint8List.fromList(pMrz.cast<Uint8>().asTypedList(pMrzSize.value)));
        return vMrz;
      } finally {
        calloc.free(pMrz);
        calloc.free(pMrzSize);
      }
    }