def _set_id(self, v, load=False):
    """
    Setter method for id, mapped from YANG variable /macsec/mka/key_chains/key_chain/mka_keys/mka_key/state/id (oc-yang:hex-string)
    If this variable is read-only (config: false) in the
    source YANG file, then _set_id is considered as a private
    method. Backends looking to populate this variable should
    do so via calling thisObj._set_id() directly.

    YANG Description: Key identifier is used as the