class_docstr: A class for querying and converting data.
docstr: Returns a batch of one-hot labels.
code: def provide_one_hot_labels(self, batch_size):
      """Returns a batch of one-hot labels."""
      with tf.name_scope("inputs"):
          with tf.device("/cpu:0"):
              return self.dataset.provide_one_hot_labels(
                  batch_size=batch_size
              )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from magenta.models.gansynth.lib import datasets
  from magenta.models.gansynth.lib import train_util
  from magenta.models.gansynth.lib.specgrams_helper import SpecgramsHelper
  import tensorflow.compat.v1
label_desc: Use image node_id 7 for calling the DataHelper obj's underlying member method code with example usage: obj.provide_one_hot_labels(batch_size) and returns: self