class_docstr: A simple object to capture a task head (tower).
code: def _add_projection_if_needed(self, logits, number_of_classes):
      if logits.get_shape().as_list()[-1] == number_of_classes:
          return logits
      else:
          return tf.keras.layers.Dense(
              number_of_classes, name="maybe_project"
          )(logits)
  
imports: import collections
  import functools
  import inspect
  from absl import logging
  from model_search import block_builder
  from model_search import ensembler
  from model_search.architecture import architecture_utils
  from model_search.architecture import tower
  from model_search.ensembler import EnsembleLogits
  from model_search.generators import base_tower_generator
  from model_search.generators import trial_utils
  from model_search.meta import distillation
  import numpy
  import tensorflow.compat.v2
label_desc: Use image node_id 4 for calling the Task obj's underlying member method code with example usage: obj._add_projection_if_needed(logits, number_of_classes) and returns: logits, tf