public function sync_handle( array $data_source = null ) {
		/** @var Tribe__Log $logger */
		$logger  = tribe( 'logger' );
		$log_src = 'Featured image setter';

		$logger->log_debug( "(ID: {$this->identifier}) - handling request.", $log_src );

		$data_source = isset( $data_source ) ? $data_source : $_POST;

		if ( ! isset( $data_source['post_id'], $data_source['post_thumbnail'] ) ) {
			return;
		}

		$id             = filter_var( $data_source['post_id'], FILTER_SANITIZE_NUMBER_INT );
		$post_thumbnail = filter_var( $data_source['post_thumbnail'], FILTER_SANITIZE_STRING );

		$logger->log_debug( "(ID: {$this->identifier}) - fetching {$post_thumbnail} for post {$id}", $log_src );

		$thumbnail_id = tribe_upload_image( $post_thumbnail );

		if ( false === $thumbnail_id ) {
			$logger->log_debug( "(ID: {$this->identifier}) - could not fetch {$post_thumbnail} for post {$id}, done.", $log_src );

			return;
		}

		$set = set_post_thumbnail( $id, $thumbnail_id );

		if ( false === $set ) {
			$logger->log_debug( "(ID: {$this->identifier}) - fetched {$post_thumbnail}, created attachment with ID {$thumbnail_id}, unable to set thumbnail for post {$id}, done.", $log_src );

			return 0;
		}

		$logger->log_debug( "(ID: {$this->identifier}) - fetched {$post_thumbnail}, created attachment with ID {$thumbnail_id}, set thumbnail for post {$id}, done.", $log_src );
	}