docstr: Retrieve update node.
          
code: def forward_update_embeddings(self, sess):
      """Retrieve update node."""
      sess.run(self._update_node)
      sess.run(self._clear_flag)
  
file_path: openrec/openrec/tf1/legacy/modules/extractions/temporal_latent_factor.py
imports: import tensorflow
  import numpy
  from tqdm import tqdm
  from openrec.tf1.legacy.modules.extractions import Extraction
  from openrec.tf1.legacy.modules.extractions import MultiLayerFC
label_desc: Use image node_id 5 for calling the TemporalLatentFactor obj's underlying member method code with example usage: obj.forward_update_embeddings(sess) without return types