code: def event_shape(self) -> Tuple:
      return ()
  
imports: import math
  from numbers import Number
  from typing import Dict, Optional, Tuple, Union
  import torch
  from torch.distributions import constraints
  from torch.distributions.utils import broadcast_all
  import torch.nn.functional
  from .distribution_output import DistributionOutput
  from gluonts.core.component import validated
  from torch.distributions import Distribution
label_desc: Use image node_id 4 for calling the TruncatedNormalOutput obj's underlying member method code with example usage: obj.event_shape() and returns: 