# buildVdsAsJson method

String buildVdsAsJson(

1. String? indentation

)

Builds a representation of the VDS, in JSON format.

param indentation The indentation of the json string. return The result. throws BiosealException An error has occurred during Bioseal Library execution.

## Implementation

    String buildVdsAsJson(String? indentation) {
      Pointer<Char>? pIndentation = indentation?.toNativeUtf8().cast<Char>();
      Pointer<Char> pResult = nullptr;
      Pointer<Int> pResultSize = calloc.allocate(1);
      pResultSize[0] = -1;
      try {
        var err = biosealSDK.id3Bioseal_BuildVdsAsJson(_pHandle.value, pIndentation ?? nullptr, pResult, pResultSize);
        if (err == BiosealError.insufficientBuffer.value) {
          pResult = calloc.allocate(pResultSize.value);
          err = biosealSDK.id3Bioseal_BuildVdsAsJson(_pHandle.value, pIndentation ?? nullptr, pResult, pResultSize);
          if (err != BiosealError.success.value) {
            throw BiosealException(err);
          }
        }
        final vResult = utf8.decode(Uint8List.fromList(pResult.cast<Uint8>().asTypedList(pResultSize.value)));
        return vResult;
      } finally {
        if (pIndentation != null) {
          calloc.free(pIndentation);
        }
        calloc.free(pResult);
        calloc.free(pResultSize);
      }
    }