docs: def GetReportData(self, get_report_args, token):
      """Filter the last week of user actions."""
      ret = rdf_report_plugins.ApiReportData(
          representation_type=RepresentationType.PIE_CHART)
  
      counts = self._GetUserCounts(get_report_args, token)
      for username in aff4_users.GRRUser.SYSTEM_USERS:
        del counts[username]
  
      ret.pie_chart.data = [
          rdf_report_plugins.ApiReportDataPoint1D(x=count, label=user)
          for user, count in sorted(iteritems(counts))
      ]
  
      return ret