@abc.abstractmethod
    def public_key(self):
If lsblk not in PATH, __virtual__ shouldn't register module
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/cryptography-1.3.1/src/cryptography/hazmat/primitives/asymmetric/rsa.py/RSAPrivateKey.public_key--crossover with--dataset/ETHPy150Open saltstack/salt/tests/unit/modules/parted_test.py/PartedTestCase.test_virtual_bails_without_lsblk