code: def input_shape(self) -> torch.Size:
      return torch.Size([DATE_INPUT_SIZE])
  
imports: import logging
  from typing import Dict, List, Optional, Type
  import torch
  from ludwig.api_annotations import DeveloperAPI
  from ludwig.constants import DATE, ENCODER_OUTPUT
  from ludwig.encoders.base import Encoder
  from ludwig.encoders.registry import register_encoder
  from ludwig.encoders.types import EncoderOutputDict
  from ludwig.modules.embedding_modules import Embed
  from ludwig.modules.fully_connected_modules import FCStack
  from ludwig.schema.encoders.base import BaseEncoderConfig
  from ludwig.schema.encoders.date_encoders import DateEmbedConfig, DateWaveConfig
  from ludwig.utils import torch_utils
label_desc: Use image node_id 4 for calling the DateWave obj's underlying member method code with example usage: obj.input_shape() and returns: torch