Github user achristianson commented on the issue:
https://github.com/apache/nifi-minifi-cpp/pull/181
@phrocker my thought is to definitely keep the RAII to have simpler/safer
resource management. I see the unlink in the destructor. I would just tweak the
naming & organization a bit. Now I see this is actually a unique *temporary*
file session, so I would put that in the name. I wouldn't get rid of
FileSystemUtils, but would create a nested class i.e.
FileSystemUtils::TempFileManager. Usage like this:
```c++
{
FileSystemUtils::TempFileManager mgr;
auto tmp_file = mgr.unique_file("/tmp", false);
// Do something with tmp_file
} // All tmp files created with mgr are cleaned up (RAII)
```
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