How to keep class/documentation in html output

Hi,

We use a lot of additional pages in markdown format to complement our 
source code to produce HTML-based documentation, e.g.:

     https://www.openfoam.com/documentation/guides/latest/doc/

It works well, except that all output files are written to a single 
directory.  To work around this we typically build the hierarchy into 
the file name, e.g. on disk the source file:

     foo/bar/baz.md

is renamed

     foo/bar/foo-bar-baz.md

leading to the final documentation file being output as

     <out-dir>/foo-bar-baz.html

Is there a way to output the (HTML) documentation using the same folder 
hierarchy that was used for the input files? i.e.

     <out-dir>/foo/bar/baz.html

There's a similar posting on stack exchange here from 2014:

     
https://stackoverflow.com/questions/24850664/customize-the-doxygen-to-output-the-html-file-in-class-hierarchy

Thanks,
Andy