code: def params_dict():
      return {
          "hidden_size1": 6,
          "hidden_size2": 4,
          "combined_hidden_size": 16,
          "num_attention_heads": 2,
          "dropout1": 0.1,
          "dropout2": 0.2,
      }
  
file_path: allennlp/tests/modules/transformer/bimodal_attention_test.py
imports: import torch
  import pytest
  from allennlp.common import Params
  from allennlp.modules.transformer import BiModalAttention
label_desc: Use image node_id 1 for calling a global function with example usage: params_dict() and returns: dict