code: def test_can_init_dot(self):
      legacy_attention = MatrixAttention.from_params(
          Params({"type": "dot_product"})
      )
      isinstance(legacy_attention, DotProductMatrixAttention)
  
file_path: magnitude/pymagnitude/third_party/allennlp/tests/modules/matrix_attention/dot_product_matrix_attention_test.py
imports: from __future__ import absolute_import
  import torch
  from numpy.testing import assert_almost_equal
  import numpy
  from allennlp.common import Params
  from allennlp.common.testing.test_case import AllenNlpTestCase
  from allennlp.modules.matrix_attention import DotProductMatrixAttention
  from allennlp.modules.matrix_attention.matrix_attention import MatrixAttention
label_desc: Use image node_id 1 for calling the TestDotProductMatrixAttention obj's underlying member method code with example usage: obj.test_can_init_dot() without return types