def _set_interface_auth_key(self, v, load=False):
    """
    Setter method for interface_auth_key, mapped from YANG variable /routing_system/interface/ve/intf_isis/interface_isis/interface_auth_key (list)
    If this variable is read-only (config: false) in the
    source YANG file, then _set_interface_auth_key is considered as a private
    method. Backends looking to populate this variable should
    do so via calling thisObj._set_interface_auth_key() directly.
    """
    if hasattr(v, "_utype"):
      v = v._utype(v)
    try:
      t = YANGDynClass(v,base=YANGListType("interface_auth_key_level",interface_auth_key.interface_auth_key, yang_name="interface-auth-key", rest_name="auth-key", parent=self, is_container='list', user_ordered=False, path_helper=self._path_helper, yang_keys='interface-auth-key-level', extensions={u'tailf-common': {u'info': u'Define authentication key', u'cli-suppress-mode': None, u'callpoint': u'IsisVeInterfaceAuthKey', u'cli-compact-syntax': None, u'cli-sequence-commands': None, u'cli-suppress-key-abbreviation': None, u'cli-incomplete-command': None, u'alt-name': u'auth-key'}}), is_container='list', yang_name="interface-auth-key", rest_name="auth-key", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions={u'tailf-common': {u'info': u'Define authentication key', u'cli-suppress-mode': None, u'callpoint': u'IsisVeInterfaceAuthKey', u'cli-compact-syntax': None, u'cli-sequence-commands': None, u'cli-suppress-key-abbreviation': None, u'cli-incomplete-command': None, u'alt-name': u'auth-key'}}, namespace='urn:brocade.com:mgmt:brocade-isis', defining_module='brocade-isis', yang_type='list', is_config=True)
    except (TypeError, ValueError):
      raise ValueError({
          'error-string': """interface_auth_key must be of a type compatible with list""",
          'defined-type': "list",
          'generated-type': """YANGDynClass(base=YANGListType("interface_auth_key_level",interface_auth_key.interface_auth_key, yang_name="interface-auth-key", rest_name="auth-key", parent=self, is_container='list', user_ordered=False, path_helper=self._path_helper, yang_keys='interface-auth-key-level', extensions={u'tailf-common': {u'info': u'Define authentication key', u'cli-suppress-mode': None, u'callpoint': u'IsisVeInterfaceAuthKey', u'cli-compact-syntax': None, u'cli-sequence-commands': None, u'cli-suppress-key-abbreviation': None, u'cli-incomplete-command': None, u'alt-name': u'auth-key'}}), is_container='list', yang_name="interface-auth-key", rest_name="auth-key", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions={u'tailf-common': {u'info': u'Define authentication key', u'cli-suppress-mode': None, u'callpoint': u'IsisVeInterfaceAuthKey', u'cli-compact-syntax': None, u'cli-sequence-commands': None, u'cli-suppress-key-abbreviation': None, u'cli-incomplete-command': None, u'alt-name': u'auth-key'}}, namespace='urn:brocade.com:mgmt:brocade-isis', defining_module='brocade-isis', yang_type='list', is_config=True)""",
        })

    self.__interface_auth_key = t
    if hasattr(self, '_set'):
      self._set()