private ContentHash CalculateHashWithMemoryMappedFile(IAbsFileSystem fileSystem, AbsolutePath path, HashType hashType)
{
#if NET_COREAPP
using var file = fileSystem.OpenForHashing(path);
return(file.ToFileStream().HashFile(hashType));
#else
return(fileSystem.CalculateHashAsync(path, hashType).GetAwaiter().GetResult());
#endif
}