code: def run(self):
          
          from zengine.lib.cache import WFSpecNames
  
          if self.manager.args.clear:
              self._clear_models()
              return
  
          if self.manager.args.wf_path:
              paths = self.get_wf_from_path(self.manager.args.wf_path)
          else:
              paths = self.get_workflows()
  
          self.count = 0
  
          self.do_with_submit(self.load_diagram, paths, threads=self.manager.args.threads)
  
          WFSpecNames().refresh()
  
          print("%s BPMN file loaded" % self.count)
docs: read workflows, checks if it's updated,
          tries to update if there aren't any running instances of that wf