def _set_trigger(self, v, load=False):
if hasattr(v, "<STR_LIT>"):<EOL><INDENT>v = v._utype(v)<EOL><DEDENT>try:<EOL><INDENT>t = YANGDynClass(<EOL>v,<EOL>base=TypedListType(<EOL>allowed_type=RestrictedClassType(<EOL>base_type=six.text_type,<EOL>restriction_type="<STR_LIT>",<EOL>restriction_arg={<EOL>"<STR_LIT>": {<EOL>"<STR_LIT>": "<STR_LIT>",<EOL>"<STR_LIT>": "<STR_LIT>",<EOL>},<EOL>"<STR_LIT>": {<EOL>"<STR_LIT>": "<STR_LIT>",<EOL>"<STR_LIT>": "<STR_LIT>",<EOL>},<EOL>"<STR_LIT>": {<EOL>"<STR_LIT>": "<STR_LIT>",<EOL>"<STR_LIT>": "<STR_LIT>",<EOL>},<EOL>},<EOL>)<EOL>),<EOL>is_leaf=False,<EOL>yang_name="<STR_LIT>",<EOL>parent=self,<EOL>path_helper=self._path_helper,<EOL>extmethods=self._extmethods,<EOL>register_paths=True,<EOL>namespace="<STR_LIT>",<EOL>defining_module="<STR_LIT>",<EOL>yang_type="<STR_LIT>",<EOL>is_config=False,<EOL>)<EOL><DEDENT>except (TypeError, ValueError):<EOL><INDENT>raise ValueError(<EOL>{<EOL>"<STR_LIT>": """<STR_LIT>""",<EOL>"<STR_LIT>": "<STR_LIT>",<EOL>"<STR_LIT>": """<STR_LIT>""",<EOL>}<EOL>)<EOL><DEDENT>self.__trigger = t<EOL>if hasattr(self, "<STR_LIT>"):<EOL><INDENT>self._set()<EOL><DEDENT>
Setter method for trigger, mapped from YANG variable /network_instances/network_instance/protocols/protocol/ospfv2/global/timers/max_metric/state/trigger (identityref)
    If this variable is read-only (config: false) in the
    source YANG file, then _set_trigger is considered as a private
    method. Backends looking to populate this variable should
    do so via calling thisObj._set_trigger() directly.

    YANG Description: By default, the maximum metric is only advertised
when the max-metric/set leaf is specified as true.
In the case that identities are specified within this
list, they provide additional triggers (e.g., system
boot) that may cause the max-metric to be set. In this
case, the system should still honour the timeout specified
by the max-metric/timeout leaf, and clear the max-metric
advertisements after the expiration of this timer.