public FileStream(Microsoft.Win32.SafeHandles.SafeFileHandle handle, FileAccess access, int bufferSize, bool isAsync)
{
_innerStream = new Win32FileStream(handle, access, bufferSize, isAsync, this);
}
/// <summary>Initialize the awaitable.</summary>
internal unsafe AsyncCopyToAwaitable(Win32FileStream fileStream)
{
_fileStream = fileStream;
}
