docstr: Prediction on x.
  :param x: input
  :return: predicted y
docstr_tok: ["Prediction","on","x.",":","param","x",":","input",":","return",":","predicted","y"]
code: def predict(self, x):
      """
      Prediction on x.
      :param x: input
      :return: predicted y
      """
      if not self.model_built:
          raise RuntimeError(
              "You must call fit_eval or restore first before calling predict!"
          )
      return self.model.predict(
          x, batch_size=self.config.get("batch_size", 32)
      )
  
imports: from zoo.orca.automl.model.abstract import BaseModel, ModelBuilder
  import numpy
  from zoo.orca.automl.metrics import Evaluator
  import pickle
  import tensorflow
  from tensorflow.keras import backend
label_desc: Use image node_id 5 for calling the KerasBaseModel obj's underlying member method code with example usage: obj.predict(x) and returns: self