code: def add_condition(self, observed_arr):
          '''
          Add condtion.
  
          Args:
              observed_arr:       `np.ndarray` of samples.
  
          Returns:
              `np.ndarray` of samples.
          '''
          condition_arr = self.__image_true_sampler.draw()
          return np.concatenate((observed_arr, condition_arr), axis=1f add_condition(self, observed_arr):
          '''
          Add condtion.
  
          Args:
              observed_arr:       `np.ndarray` of samples.
  
          Returns:
              `np.ndarray` of samples.
          '''
          condition_arr = self.__image_true_sampler.draw()
          return np.concatenate((observed_arr, condition_arr), axis=1)
docs: Add condtion.
  
          Args:
              observed_arr:       `np.ndarray` of samples.
  
          Returns:
              `np.ndarray` of samples.