class_docstr: emotion keras solver 
class_docstr_tok: ["emotion","keras","solver"]
docstr: keras Model 
docstr_tok: ["keras","Model"]
code: def model(self):
      """keras Model"""
      return self.raw_model
  
imports: import librosa
  from absl import logging
  import delta.compat
  from tensorflow.keras import backend
  from tensorflow.python.keras.utils import losses_utils
  from delta import utils
  from delta.utils.solver.estimator_solver import EstimatorSolver
  from delta.utils.solver.utils.callbacks import ClassReportCallBack
  from delta.utils.solver.asr_solver import AsrSolver
  from delta.utils.register import registers
label_desc: Use image node_id 2 for calling the EmoKerasSolver obj's underlying member method code with example usage: obj.model() and returns: self