Form this outage is expected to take, which can take one of the
following values: - OUTAGE: The Interconnect may be completely out
of service for some or all of the specified window. -
PARTIAL_OUTAGE: Some circuits comprising the Interconnect as a whole
should remain up, but with reduced bandwidth. Note that the versions
of this enum prefixed with IT_ have been deprecated in favor of
the unprefixed values.