def nodetool(self, cmd, username=None, password=None, capture_output=True, wait=True):
    if (password is not None):
        cmd = ('-pw {} '.format(password) + cmd)
    if (username is not None):
        cmd = ('-u {} '.format(username) + cmd)
    return super(DseNode, self).nodetool(cmd)
def nodetool(self, cmd, username=None, password=None, capture_output=True, wait=True):
    if (password is not None):
        cmd = ('-pw {} '.format(password) + cmd)
    if (username is not None):
        cmd = ('-u {} '.format(username) + cmd)
    return super(DseNode, self).nodetool(cmd)