Repo.ProductServiceProvider.php

<?php namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use App\Contracts\ProductDataInterface;
use App\Models\Product;

class ProductServiceProvider extends ServiceProvider
{
    /**
     * Bind the ProductDataInterface to the implementation
     */
    public function register()
    {
        $this->app->bind(
            ProductDataInterface::class,
            Product::class
        );
    }
}