Change donut title (Interior text) dynamically with chart loads

Is there a way to make the title inside the donut chart change to the sum of all the data values, updating automatically with every data load into the chart?

Start by reviewing the donut chart implementation and the chart's data-loading API. Trace how the interior title is rendered and how data loads trigger updates. Done means the title displays the sum of all data values and refreshes automatically after every load.

Written by the indexing model from the issue text.