_SkipStreamBlock
_SkipStreamBlock(fStream, 6);
_SkipStreamBlock(fStream, fColorModeDataSize);
_SkipStreamBlock(fStream, fImageResourceSectionSize);
_SkipStreamBlock(fStream, resSize);
_SkipStreamBlock(fStream, _GetInt32FromStream(fStream));
_SkipStreamBlock(fStream, _GetInt64FromStream(fStream));
void _SkipStreamBlock(BPositionIO *in, size_t count);