class_docstr: Abstract base class for creation of new serializers.
  
  This class extends the API of :class:~`sagemaker.serializers.BaseSerializer` with more
  user-friendly options for setting the Content-Type header, in situations where it can be
  provided at init and freely updated.
docstr: The data MIME type set in the Content-Type header on prediction endpoint requests.
docstr_tok: ["The","data","MIME","type","set","in","the","Content-Type","header","on","prediction","endpoint","requests","."]
code: def CONTENT_TYPE(self):
      """The data MIME type set in the Content-Type header on prediction endpoint requests."""
      return self.content_type
  
imports: from __future__ import absolute_import
  import abc
  from collections.abc import Iterable
  import csv
  import io
  import json
  import numpy
  from pandas import DataFrame
  from six import with_metaclass
  from sagemaker.utils import DeferredError
label_desc: Use image node_id 2 for calling the SimpleBaseSerializer obj's underlying member method code with example usage: obj.CONTENT_TYPE() and returns: self