code: def build(self):
      self._model.build()
      self._fastmodel.build()
  
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 3 for calling the FastDotProductServer obj's underlying member method code with example usage: obj.build() without return types