Access the Google Sheets API for unsupported functionality

I tried to find out if this was possible in the documentation but didn't find anything so I guess this ticket could be either a documentation bug/shortcoming or if it's not actually possible, it could be a feature request, either for the ability to interact with the Sheets API from a gspread Client or even better, the ability to manipulate charts. Understanding that the former would be much simpler than the latter, so either is fine with me.

I want to do some Google Sheet manipulation that is not exposed by gspread. Specifically I want to update the Data Range of a chart.

Given that gspread does not have any support for charts, I presume I would need to use the Sheets API directly to do that.

So the question is [how] can I use the Sheets API directly with the Client object I have open with gspread assuming I knew the chart id already?

FWIW, I did try StackExchange for this question before opening this ticket but my question there was closed by a moderator, so it seems that Stack Exchange is not always a suitable to place to ask questions about gspread unfortunately.