def __init__(self, ip, key, username = 'root'):
        self.ip = ip
        self.key = key
        self.username = username
Basic TreeNode operations should work as expected
dataset/ETHPy150Open bmbouter/Opus/opus/lib/ssh_tools.py/NodeUtil.__init__--crossover with--dataset/ETHPy150Open biocore/scikit-bio/skbio/tree/tests/test_tree.py/TreeTests.test_gops