class_docstr: Defines a data source given by a bucket and S3 prefix.
  
  The contents will be downloaded and then processed as local data.
docstr: Retrieve the absolute path to the root directory of this data source.
  
  Returns:
      str: absolute path to the root directory of this data source.
docstr_tok: ["Retrieve","the","absolute","path","to","the","root","directory","of","this","data","source",".","Returns",":","str",":","absolute","path","to","the","root","directory","of","this","data","source","."]
code: def get_root_dir(self):
      """Retrieve the absolute path to the root directory of this data source.
  
      Returns:
          str: absolute path to the root directory of this data source.
      """
      return self.files.get_root_dir()
  
imports: from __future__ import absolute_import
  import os
  import platform
  import sys
  import tempfile
  from abc import ABCMeta
  from abc import abstractmethod
  from six import with_metaclass
  from six.moves.urllib.parse import urlparse
  import sagemaker.amazon.common
  import sagemaker.local.utils
  import sagemaker.utils
label_desc: Use image node_id 3 for calling the S3DataSource obj's underlying member method code with example usage: obj.get_root_dir() and returns: self