registered_channels[ $channel->get_slug() ] ) ) { throw new Exception( __( 'Marketing channel cannot be registered because there is already a channel registered with the same slug!', 'woocommerce' ) ); } $this->registered_channels[ $channel->get_slug() ] = $channel; } /** * Unregisters all marketing channels. * * @return void */ public function unregister_all(): void { unset( $this->registered_channels ); } /** * Returns an array of all registered marketing channels. * * @return MarketingChannelInterface[] */ public function get_registered_channels(): array { /** * Filter the list of registered marketing channels. * * @param MarketingChannelInterface[] $channels Array of registered marketing channels. * * @since x.x.x */ $channels = apply_filters( 'woocommerce_marketing_channels', $this->registered_channels ); return array_values( $channels ); } }