def METHOD_NAME(self):
    op = "volume management\n"
    op += "    type mgmt/glusterd\n"
    for k, v in self._options.items():
        op += "    option %s %s\n" % (k, v)
    for line in self.commented_lines:
        op += "    %s\n" % line
    op += "end-volume"
    return op