code: def test_can_init_dot(self):
      legacy_attention = MatrixAttention.from_params(
          Params(
              {"type": "linear", "tensor_1_dim": 3, "tensor_2_dim": 3}
          )
      )
      isinstance(legacy_attention, LinearMatrixAttention)
  
file_path: allennlp/tests/modules/matrix_attention/linear_matrix_attention_test.py
imports: import numpy
  from numpy.testing import assert_almost_equal
  import torch
  from torch.nn import Parameter
  from allennlp.common import Params
  from allennlp.common.testing.test_case import AllenNlpTestCase
  from allennlp.modules.matrix_attention import LinearMatrixAttention
  from allennlp.modules.matrix_attention.matrix_attention import MatrixAttention
label_desc: Use image node_id 1 for calling the TestLinearMatrixAttention obj's underlying member method code with example usage: obj.test_can_init_dot() without return types