code: def check_as_b_send_completion(self):
          
          op_result = ctypes.c_int32()
          result = self.library.Par_CheckAsBSendCompletion(self.pointer,
                                                   ctypes.byref(op_result))
          return_values = {
              0: "job complete",
              1: "job in progress",
              -2: "invalid handled supplied",
          }
  
          if result == -2:
              raise Snap7Exception("The Client parameter was invalid")
  
          return return_values[result], op_result
docs: Checks if the current asynchronous send job was completed and terminates
          immediately.