'Access the public_key
:returns: twilio.rest.accounts.v1.credential.public_key.PublicKeyList
:rtype: twilio.rest.accounts.v1.credential.public_key.PublicKeyList'

@property
def public_key(self):

    if (self._public_key is None):
        self._public_key = PublicKeyList(self._version)
    return self._public_key
