mpdlcd file location

Could someone put an old fool out of his misery?
I’m looking for the mpdlcd associated file ‘display_fields.py’ but cannot find it.

Anyone point me in the right direction?
Many thanks in advance.

As far as I know, mpdlcd is not a part of volumio… So you’d better have a look at https://github.com/rbarrois/mpdlcd