# getManifestUrl method

String getManifestUrl(

1. Uint8List? tslData

)

Returns the URL to the manifest.

param tslData The TSL data. return The manifest url. throws BiosealException An error has occurred during Bioseal Library execution.

## Implementation

    String getManifestUrl(Uint8List? tslData) {
      Pointer<UnsignedChar>? pTslData;
      if (tslData != null) {
      	pTslData = calloc.allocate<UnsignedChar>(tslData.length);
      	pTslData.cast<Uint8>().asTypedList(tslData.length).setAll(0, tslData);
      }
      Pointer<Char> pUrl = nullptr;
      Pointer<Int> pUrlSize = calloc.allocate(1);
      pUrlSize[0] = -1;
      try {
        var err = biosealSDK.id3BiosealLotl_GetManifestUrl(_pHandle.value, pTslData ?? nullptr, tslData?.length ?? 0, pUrl, pUrlSize);
        if (err == BiosealError.insufficientBuffer.value) {
          pUrl = calloc.allocate(pUrlSize.value);
          err = biosealSDK.id3BiosealLotl_GetManifestUrl(_pHandle.value, pTslData ?? nullptr, tslData?.length ?? 0, pUrl, pUrlSize);
          if (err != BiosealError.success.value) {
            throw BiosealException(err);
          }
        }
        final vUrl = utf8.decode(Uint8List.fromList(pUrl.cast<Uint8>().asTypedList(pUrlSize.value)));
        return vUrl;
      } finally {
        if (pTslData != null) {
          calloc.free(pTslData);
        }
        calloc.free(pUrl);
        calloc.free(pUrlSize);
      }
    }