docs: def setup_tasks(self, tasks):
          """
          Find task classes from category.namespace.name strings
          tasks - list of strings
          """
          task_classes = []
          for task in tasks:
              category, namespace, name = task.split(".")
              try:
                  cls = find_in_registry(category=category, namespace=namespace, name=name)[0]
              except TypeError:
                  log.error("Could not find the task with category.namespace.name {0}".format(task))
                  raise TypeError
              task_classes.append(cls)
          self.tasks = task_classes