The structure of pulp's task['progress_report'] is not documented
The documentation http://docs.pulpproject.org/dev-guide/integration/rest-api/tasks.html
mentions that the progress_report field contains "arbitrary progress information, usually in the form of an object".
I assume that the structure of this object depends on the task type (and possibly something else). Is the structure for some cases agreed upon? If yes, can we document it?