code: def supports_multivariate(self) -> bool:
      return True
  
imports: import inspect
  from abc import ABC, abstractmethod
  from typing import List, Optional, Tuple, Type, Union
  import torch
  import torch.nn
  from darts.logging import get_logger, raise_log
  from darts.models.forecasting.pl_forecasting_module import PLPastCovariatesModule, io_processor
  from darts.models.forecasting.torch_forecasting_model import PastCovariatesTorchModel
label_desc: Use image node_id 2 for calling the BlockRNNModel obj's underlying member method code with example usage: obj.supports_multivariate() and returns: True