class_docstr: asr keras base solver
class_docstr_tok: ["asr","keras","base","solver"]
docstr: keras Model before doing `multi_gpu_model` 
docstr_tok: ["keras","Model","before","doing","`","multi_gpu_model","`"]
code: def model(self):
      """keras Model before doing `multi_gpu_model`"""
      return self.raw_model.model
  
imports: from pathlib import Path
  from absl import logging
  import delta.compat
  from tensorflow.keras.utils import multi_gpu_model
  from tensorflow.keras.callbacks import EarlyStopping
  from tensorflow.keras.callbacks import TensorBoard
  from tensorflow.keras.callbacks import CSVLogger
  from tensorflow.keras.callbacks import ReduceLROnPlateau
  from delta import utils
  from delta.utils.solver.utils import solver_utils
  from delta.utils.solver.base_solver import Solver
  from delta.utils.solver.utils.callbacks import ParallelModelCheckpoint
  from delta.utils.register import registers
label_desc: Use image node_id 4 for calling the KerasBaseSolver obj's underlying member method code with example usage: obj.model() and returns: self