code: def context_embed(self, n_id):
      emb = self.context_encoder(n_id)
      return emb
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import tensorflow
  import tf_euler
  import six
  from tf_euler.python.solution.logits import CosineLogits, PosNegLogits
  from tf_euler.python.solution.losses import sigmoid_loss, xent_loss
  from tf_euler.python.solution.base_unsupervise import UnsuperviseSolution
label_desc: Use image node_id 3 for calling the UnsuperviseSampleSolution obj's underlying member method code with example usage: obj.context_embed(n_id) and returns: emb