'Verify that the request is not too old (according to the timestamp), and
that the nonce value has not been used already within the period of time
in which the timestamp marks a request as valid. This method signature
is required by the oauthlib library.
:return: True if the OAuth nonce and timestamp are valid, False if they
are not.'

def validate_timestamp_and_nonce(self, client_key, timestamp, nonce, request, request_token=None, access_token=None):

    return True
