code: def nifti_size(self):
      return (
          352
          + 2 * len(self.storage_instances) * self.columns * self.rows
      )
  
imports: import contextlib
  import getpass
  import logging
  import os
  import sqlite3
  import tempfile
  import warnings
  from io import BytesIO
  from os.path import join
  import numpy
  from nibabel.optpkg import optional_package
  from .nifti1 import Nifti1Header
label_desc: Use image node_id 6 for calling the _Series obj's underlying member method code with example usage: obj.nifti_size() and returns: unknown