private unsafe string GetFileName(ReadOnlySpan<char> cacheKey)
{
var encoding = Encoding.UTF8;
var bytesRequired = encoding.GetByteCount(cacheKey);
Span<byte> bytes = stackalloc byte[bytesRequired];
encoding.GetBytes(cacheKey, bytes);
Span<byte> hashBytes = stackalloc byte[16];
FileNameHashAlgorithm.TryComputeHash(bytes, hashBytes, out var _);
#endif
var fileExtensionLength = FileExtension?.Length ?? 0;
private unsafe string GetFileName(string cacheKey)
{
var bytes = Encoding.UTF8.GetBytes(cacheKey);
var hashBytes = FileNameHashAlgorithm.ComputeHash(bytes);
