code: def test_numba_njit(self):
      x = np.random.random(10)
      y = np.random.random(1)
      result = ray.get(centroid_wrapper.remote(x, y))
      assert result == centroid(x, y)
  
file_path: ray/python/ray/tests/test_numba.py
imports: import unittest
  from numba import njit
  import numpy
  import ray
label_desc: Use image node_id 3 for calling the NumbaTest obj's underlying member method code with example usage: obj.test_numba_njit() without return types