text: #!/usr/bin/env python
  import txros
  from navigator_tools import fprint
  
  
  @txros.util.cancellableInlineCallbacks
  def main(navigator, **kwargs):
      nh = navigator.nh
      fprint("{} running".format(__name__), msg_color='red')
      yield nh.sleep(2)
      fprint("{} stopped running".format(__name__), msg_color='red')
  