public function get_product_by_sku( $sku, $fields = null ) {
		try {
			$id = wc_get_product_id_by_sku( $sku );

			if ( empty( $id ) ) {
				throw new WC_API_Exception( 'woocommerce_api_invalid_product_sku', __( 'Invalid product SKU', 'woocommerce' ), 404 );
			}

			return $this->get_product( $id, $fields );
		} catch ( WC_API_Exception $e ) {
			return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
		}
	}