getSimilarProducts example

'description' => $product->getManufacturer()->getName(),
            'target' => '_parent',
            'link' => $this->getSupplierListingLink($product->getManufacturer()),
        ];

        $data['sRelatedArticles'] = [];
        foreach ($product->getRelatedProducts() as $relatedProduct) {
            $data['sRelatedArticles'][] = $this->convertListProductStruct($relatedProduct);
        }

        $data['sSimilarArticles'] = [];
        foreach ($product->getSimilarProducts() as $similarProduct) {
            $data['sSimilarArticles'][] = $this->convertListProductStruct($similarProduct);
        }

        $data['relatedProductStreams'] = [];
        foreach ($product->getRelatedProductStreams() as $relatedProductStream) {
            $data['relatedProductStreams'][] = $this->convertRelatedProductStreamStruct($relatedProductStream);
        }

        return $this->eventManager->filter('Legacy_Struct_Converter_Convert_Product', $data, [
            'product' => $product,
        ]);
    }