def __init__(self, parent=None, **kwargs):
    if not parent:
      raise ValueError(u'Missing parent value.')

    super(VMDKPathSpec, self).__init__(parent=parent, **kwargs)
Create a keypair with random name and delete keypair.
dataset/ETHPy150Open log2timeline/dfvfs/dfvfs/path/vmdk_path_spec.py/VMDKPathSpec.__init__--crossover with--dataset/ETHPy150Open openstack/rally/rally/plugins/openstack/scenarios/nova/keypairs.py/NovaKeypair.create_and_delete_keypair