code: def test_builder_eval(self):
      x_val = np.arange(6).astype(np.float32).reshape((1, 3, 2))
      y_val = np.arange(24).astype(np.float32).reshape((2, 3, 4))
      equation = "bcd,dce->bce"
      v = mb.einsum(values=(x_val, y_val), equation=equation)
      np.testing.assert_allclose(
          np.einsum(equation, x_val, y_val),
          v.val,
          atol=1e-04,
          rtol=1e-05,
      )
  
imports: import itertools
  import platform
  import numpy
  import pytest
  import coremltools
  from coremltools.converters.mil.mil import Builder
  from coremltools.converters.mil.mil import get_new_symbol, types
  from coremltools.converters.mil.mil.ops.tests.iOS14 import backends
  from coremltools.converters.mil.mil.ops.tests.testing_utils import run_compare_builder
  from coremltools.converters.mil.mil.types import builtin_to_string, nptype_from_builtin
  from coremltools.converters.mil.testing_reqs import compute_units
  from coremltools.converters.mil.testing_utils import random_gen, ssa_fn
label_desc: Use image node_id 3 for calling the TestEinsum obj's underlying member method code with example usage: obj.test_builder_eval() without return types