code: def isbuilt(self):
      return self._model.isbuilt()
  
file_path: openrec/openrec/tf1/fast_dot_product_server.py
imports: import numpy
  import tensorflow
  from termcolor import colored
  from openrec.tf1.recommenders import PMF
  from openrec.tf1.modules.extractions import LatentFactor
  import math
label_desc: Use image node_id 7 for calling the FastDotProductServer obj's underlying member method code with example usage: obj.isbuilt() and returns: self