docstr: Needed to use Model.predict() from superclass.
docstr_tok: ["Needed","to","use","Model.predict","(",")","from","superclass","."]
code: def get_num_tasks(self):
      """Needed to use Model.predict() from superclass."""
      return self.n_tasks
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import unicode_literals
  import warnings
  import os
  import sys
  import numpy
  import tensorflow
  import sklearn.metrics
  import tempfile
  from deepchem.data import pad_features
  from deepchem.utils.save import log
  from deepchem.models import Model
  from deepchem.nn.copy import Input
  from deepchem.nn.copy import Dense
  from deepchem.nn import model_ops
  from deepchem.models.tf_new_models.graph_topology import merge_dicts
label_desc: Use image node_id 13 for calling the MultitaskGraphClassifier obj's underlying member method code with example usage: obj.get_num_tasks() and returns: self