API: onClick set data labels true/false

How can i use the API like load/unload and set the data labels true or false, e.g with an onclick event?
I wanna give the user the possibility to decide own his own if labels are displayed or not.

Start by reviewing the chart API's load/unload and data-label controls, then trace how an onclick event reaches the chart. Done means users can toggle data labels on and off through the API in response to a click, with the behavior documented or demonstrated by the relevant example.

Written by the indexing model from the issue text.