parameters: (self)
return_statement: return parse_etags(self.environ.get("HTTP_IF_NONE_MATCH"))
docstring: An object containing all the etags in the `If-None-Match` header.
  
          :rtype: :class:`~werkzeug.datastructures.ETags`
docstring_summary: An object containing all the etags in the `If-None-Match` header.
docstring_tokens: An object containing all the etags in the If - None - Match header .
function: def if_none_match(self):
          """An object containing all the etags in the `If-None-Match` header.
  
          :rtype: :class:`~werkzeug.datastructures.ETags`
          """
          return parse_etags(self.environ.get("HTTP_IF_NONE_MATCH"))
function_tokens: def if_none_match ( self ) : return parse_etags ( self . environ . get ( "HTTP_IF_NONE_MATCH" ) )