code: def predict_image(self):
      files = {"upload_files": ("1.png", test_image_bytes, "image/png")}
      self.client.post("/predict_image", files=files)
  
imports: from locust import HttpUser
  from locust import between
  from locust import task
label_desc: Use image node_id 1 for calling the PyTorchMNISTLoadTestUser obj's underlying member method code with example usage: obj.predict_image() without return types