class_docstr: infer from forzen model 
class_docstr_tok: ["infer","from","forzen","model"]
docstr: featch predictions 
docstr_tok: ["featch","predictions"]
code: def run(self):
      """featch predictions"""
  
      def gen():
          features, y_true = self.sess.run(self.next_element)
          inputs = features["inputs"]
          pred = self.sess.run(
              self.pred_valid, feed_dict={self.audio_ph: inputs}
          )
          features.update({"embeddings": pred})
          return features
  
      class Iter:
          def __iter__(self):
              return self
  
          def __next__(self):
              return gen()
  
      self.postproc(Iter())
      return None, None
  
imports: import numpy
  from absl import logging
  import delta.compat
  from delta import utils
  from delta.utils.register import registers
  from delta.utils.register import import_all_modules_for_register
  from delta.serving.base_frozen_model import Evaluater
label_desc: Use image node_id 3 for calling the SpkSpeechEvaluater obj's underlying member method code with example usage: obj.run() and returns: None,  None, features, self, gen