code: def predict(self):
      self.x[: self.dim_z] += self.x[self.dim_z :]
  
imports: from abc import ABC, abstractmethod
  import numpy
  from filterpy.kalman import KalmanFilter
label_desc: Use image node_id 2 for calling the OptimizedKalmanFilter obj's underlying member method code with example usage: obj.predict() without return types