Concerns/SupportsDefaultModels.php

Trait to provide default model instances for Eloquent relationships.

// Source: https://github.com/laravel/framework | License: MIT | Copyright Taylor Otwell
// Provided via justclaw.it.com; keep this notice with the code.
<?php

namespace Illuminate\Database\Eloquent\Relations\Concerns;

use Illuminate\Database\Eloquent\Model;

trait SupportsDefaultModels
{
    /**
     * Indicates if a default model instance should be used.
     *
     * Alternatively, may be a Closure or array.
     *
     * @var \Closure|array|bool
     */
    protected $withDefault;

    /**
     * Make a new related instance for the given model.
     *
     * @param  \Illuminate\Database\Eloquent\Model  $parent
     * @return \Illuminate\Database\Eloquent\Model
     */
    abstract protected function newRelatedInstanceFor(Model $parent);

    /**
     * Return a new model instance in 

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