code: def setUp(self):
      actions_counter = Counter()
      for action in [
          "IN:A",
          "IN:B",
          "IN:UNSUPPORTED",
          "REDUCE",
          "SHIFT",
          "SL:C",
          "SL:D",
      ]:
          actions_counter[action] += 1
      actions_vocab = Vocab(actions_counter, specials=[])
  
      self.parser = RNNGParser(
          ablation=RNNGParser.Config.AblationParams(),
          constraints=RNNGParser.Config.RNNGConstraints(),
          lstm_num_layers=2,
          lstm_dim=20,
          max_open_NT=10,
          dropout=0.2,
          actions_vocab=actions_vocab,
          shift_idx=4,
          reduce_idx=3,
          ignore_subNTs_roots=[2],
          valid_NT_idxs=[0, 1, 2, 5, 6],
          valid_IN_idxs=[0, 1, 2],
          valid_SL_idxs=[5, 6],
          embedding=EmbeddingList(
              embeddings=[
                  WordEmbedding(
                      num_embeddings=5,
                      embedding_dim=20,
                      embeddings_weight=None,
                      init_range=[-1, 1],
                      unk_token_idx=4,
                      mlp_layer_dims=[],
                  ),
                  DictEmbedding(
                      num_embeddings=4,
                      embed_dim=10,
                      pooling_type=PoolingType.MEAN,
                  ),
              ],
              concat=True,
          ),
          p_compositional=CompositionalNN(lstm_dim=20),
      )
      self.parser.train()
  
imports: import unittest
  from collections import Counter
  import torch
  import torch.nn
  from pytext.common.constants import Stage
  from pytext.config.module_config import PoolingType
  from pytext.legacy.vocab import Vocab
  from pytext.models.embeddings import DictEmbedding, EmbeddingList, WordEmbedding
  from pytext.models.semantic_parsers.rnng.rnng_data_structures import CompositionalNN, CompositionalSummationNN, Element, ParserState, StackLSTM
  from pytext.models.semantic_parsers.rnng.rnng_parser import RNNGParser
label_desc: Use image node_id 1 for calling the RNNGParserTest obj's underlying member method code with example usage: obj.setUp() without return types