public function update_option( $key, $value = '' ) {
		if ( empty( $this->settings ) ) {
			$this->init_settings();
		}

		$this->settings[ $key ] = $value;

		return update_option( $this->get_option_key(), apply_filters( 'woocommerce_settings_api_sanitized_fields_' . $this->id, $this->settings ), 'yes' );
	}