WP-Model-helper-methods.php

<?php
Product::single(); // Returns the current model if on a single page or in the loop

Product::exists(15); // Returns (bool) true or false

$product->post() // Returns WP_Post object

$product->permalink() // Returns post permalink

$product->featuredImage($defaultURL) // Returns featured image URL

$product->toArray() // Returns an array representation of the model

Product::asList() // Returns array of posts keyed by the post's ID
[
    15 => Product,
    16 => Product,
    17 => Product
]

// You can also specify the value of each element in the array to be meta from the model.
Product::asList('post_title')
[
    15 => "Product 1",
    16 => "Product 2",
    17 => "Product 3"
]