code: def wploader(self):
          '''per-sysid wploader'''
          if self.target_system not in self.wploader_by_sysid:
              self.wploader_by_sysid[self.target_system] = mavwp.MAVWPLoader()
          return self.wploader_by_sysid[self.target_systemf wploader(self):
          '''per-sysid wploader'''
          if self.target_system not in self.wploader_by_sysid:
              self.wploader_by_sysid[self.target_system] = mavwp.MAVWPLoader()
          return self.wploader_by_sysid[self.target_system]
docs: per-sysid wploader