# getIdentifier method

String getIdentifier()

Gets the the document identifier.

return The document identifier. throws DocumentException An error has occurred during Document Library execution.

## Implementation

    String getIdentifier() {
      Pointer<Char> pIdentifier = nullptr;
      Pointer<Int> pIdentifierSize = calloc.allocate(1);
      pIdentifierSize[0] = -1;
      try {
        var err = documentSDK.id3DocumentInfo_GetIdentifier(_pHandle.value, pIdentifier, pIdentifierSize);
        if (err == DocumentError.insufficientBuffer.value) {
          pIdentifier = calloc.allocate(pIdentifierSize.value);
          err = documentSDK.id3DocumentInfo_GetIdentifier(_pHandle.value, pIdentifier, pIdentifierSize);
          if (err != DocumentError.success.value) {
            throw DocumentException(err);
          }
        }
        final vIdentifier = utf8.decode(Uint8List.fromList(pIdentifier.cast<Uint8>().asTypedList(pIdentifierSize.value)));
        return vIdentifier;
      } finally {
        calloc.free(pIdentifier);
        calloc.free(pIdentifierSize);
      }
    }