Laravel 5 model casting function

model.php

<?php

	namespace App\Models;

	use Illuminate\Database\Eloquent\Collection as EloquentCollection;
	use Illuminate\Database\Eloquent\Model as IlluminateModel;
	use Illuminate\Pagination\AbstractPaginator;

	class Model extends IlluminateModel
	{

		/**
		 * Casts a given array or collection to this model class if it isn't 
		 *  already
		 * 
		 * @param mixed $results Collection/array/pagintor to cast
		 * @return mixed EloquentCollection or pagination object depending
		 *  on what was passed in
		 */
		static function castResults($results)
		{
			// If the object being passed in is a paginator, let's create
			//  another paginator with the updated results
			$isPaginator = is_a($results, AbstractPaginator::class);

			$resultsToCast = $isPaginator ? $results->items() : $results;

			// Item is an array. Check to make sure each item within that array
			//  is of the correct type, and cast if not
			if (is_array($resultsToCast))
			{
				$castResults = new EloquentCollection();

				foreach ($resultsToCast as $objectToCast)
				{
					if (!is_a($objectToCast, self::class))
					{
						$castResults->push((new static)->newFromBuilder($objectToCast));
					}
					else
					{
						$castResults->push($objectToCast);
					}
				}
			}
			else
			{
				$castResults = $resultsToCast;
			}

			// If the original object was a paginator, then re-create it as
			//  best we can
			if ($isPaginator)
			{
				$paginatorClass = get_class($results);
				$newPaginator = new $paginatorClass($castResults, $results->total(), $results->perPage(), $results->currentPage());
				$newPaginator->setPath($results->resolveCurrentPath());
				return $newPaginator;
			}
			else
			{
				return $castResults;
			}
		}

	}