def _set_scsa_tx(self, v, load=False):
    """
    Setter method for scsa_tx, mapped from YANG variable /macsec/interfaces/interface/scsa_tx (container)
    If this variable is read-only (config: false) in the
    source YANG file, then _set_scsa_tx is considered as a private
    method. Backends looking to populate this variable should
    do so via calling thisObj._set_scsa_tx() directly.

    YANG Description: Enclosing container for transmitted packets for Secure Channel and