'Converts the response iterator in a list.  By default this happens
automatically if required.  If `implicit_sequence_conversion` is
disabled, this method is not automatically called and some properties
might raise exceptions.  This also encodes all the items.
.. versionadded:: 0.6'

def make_sequence(self):

    if (not self.is_sequence):
        close = getattr(self.response, 'close', None)
        self.response = list(self.iter_encoded())
        if (close is not None):
            self.call_on_close(close)
