code: def on_go(self, target):
          
          if not target:
              Log.error("expecting target")
  
          with self.lock:
              if not self._go:
                  DEBUG and self._name and Log.note("Adding target to signal {{name|quote}}", name=self.name)
  
                  if not self.job_queue:
                      self.job_queue = [target]
                  else:
                      self.job_queue.append(target)
                  return
  
          (DEBUG_SIGNAL) and Log.note("Signal {{name|quote}} already triggered, running job immediately", name=self.name)
          target()
docs: RUN target WHEN SIGNALED