'array', 'parameters' => 'array', 'rounding_policy' => 'array', 'valid_from' => 'date:Y-m-d', 'valid_until' => 'date:Y-m-d', 'reviewed_at' => 'immutable_datetime', 'approved_at' => 'immutable_datetime', 'published_at' => 'immutable_datetime', 'suspended_at' => 'immutable_datetime', 'archived_at' => 'immutable_datetime', ]; } }