code: def test_builder_eval(self):
      x = np.array([[1, 2, 3], [4, 5, 6]], dtype=np.float32)
      indices = np.array([[1, 0, 1], [0, 0, 1]], dtype=np.int32)
      v = mb.gather_along_axis(x=x, indices=indices, axis=0)
      assert is_close(
          np.array([[4, 2, 6], [1, 2, 6]], dtype=np.float32), v.val
      )
  
imports: from coremltools.converters.mil import testing_reqs
  from coremltools.converters.mil.testing_reqs import *
  from .testing_utils import run_compare_builder
label_desc: Use image node_id 2 for calling the TestGatherAlongAxis obj's underlying member method code with example usage: obj.test_builder_eval() without return types