      """HTTP request content behaviour that also allows arbitrary content to be tunneled in form data."""
      
      """The name to use for the content override field in the POST form."""
      CONTENT_PARAM = '_content'
  
      """The name to use for the content-type override field in the POST form."""
      CONTENTTYPE_PARAM = '_contenttype'
  
 
</s> remove             return None
 </s> add             return None # TODO : Breaks, because determine_content should return a tuple.
    #TODO: test PUT
    #TODO: rewrite cleaner

      """HTTP request content behaviour that also allows arbitrary content to be tunneled in form data."""
      
    #TODO: test PUT
    #TODO: rewrite cleaner

      """The name to use for the content override field in the POST form."""
      CONTENT_PARAM = '_content'
  
      """The name to use for the content-type override field in the POST form."""
      CONTENTTYPE_PARAM = '_contenttype'
  
keep add keep keep keep keep keep keep
 FomrParser now implements a work around for empty values in a list 
djangorestframework/content.py