label callback for doughnut charts?

[simzikov]

Great job on v3! I am migrating from v2. Pretty tough to be honest, however most of the work is done. One question I have is why do doughnut charts ignore global tooltip label callback overrides? Consider the following code:

Chart.defaults.plugins.tooltip.callbacks.label = function() { return 'foo' };

This will replace tooltip body content to 'foo' everywhere (line and bar) except doughnut charts. I remember in the previous version of Chart.js I had to override those with Chart.defaults.doughnut.tooltips.callbacks and Chart.defaults.doughnut.legendCallback however those doughnut specific callbacks do not seem to exist anymore. What do I do?

[kurkle]

Those were relocated to Chart.overrides.doughnut.plugins.tooltip.callbacks