private void m_fileWatcher_FileChange(object sender, FileSystemEventArgs e)
{
long responseHash;
Type handlerType;
if (m_etagCache.TryRemove(e.FullPath, out responseHash))
OnStatusMessage($"Cache [{responseHash}] cleared for file \"{e.FullPath}\"");
if (m_handlerTypeCache.TryRemove(e.FullPath, out handlerType))
OnStatusMessage($"Cleared handler type [{handlerType?.FullName}] from cache for file \"{e.FullPath}\"");
}