code: def input_types(self):
      return {
          "x": NeuralType(("B", "S", "T"), AudioSignal()),
      }
  
imports: import torch
  import torch.nn
  import torch.nn.functional
  from torch.nn import Conv2d
  from torch.nn.utils import remove_weight_norm, spectral_norm, weight_norm
  from nemo.core.classes.common import typecheck
  from nemo.core.classes.module import NeuralModule
  from nemo.core.neural_types.elements import AudioSignal, MelSpectrogramType, VoidType
  from nemo.core.neural_types.neural_type import NeuralType
label_desc: Use image node_id 2 for calling the DiscriminatorR obj's underlying member method code with example usage: obj.input_types() and returns: dict