Laravel Eloquent Model Empty Relation example

<?php namespace App\Relations;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Database\Eloquent\Relations\Relation;

/**
 * 1. Define relation method in your model:
 *  > public function foo()
 *  > {
 *  >    return new EmptyRelation();
 *  > }
 *
 * 2. Create file app/Relations/EmptyRelation.php and paste code from this gist.
 *
 * 3. Do not forget to run artisan dump-autoload
 */
class EmptyRelation extends Relation
{
    public function __construct()
    {
    }

    /**
     * Set the base constraints on the relation query.
     *
     * @return void
     */
    public function addConstraints()
    {
    }

    /**
     * Add the constraints for a relationship count query.
     *
     * @param Builder $query
     * @param Builder $parent
     *
     * @return Builder
     */
    public function getRelationCountQuery(Builder $query, Builder $parent)
    {
        return $query;
    }

    /**
     * Set the constraints for an eager load of the relation.
     *
     * @param array $models
     *
     * @return void
     */
    public function addEagerConstraints(array $models)
    {
    }

    /**
     * Initialize the relation on a set of models.
     *
     * @param array  $models
     * @param string $relation
     *
     * @return array
     */
    public function initRelation(array $models, $relation)
    {
        foreach ($models as $model) {
            $model->setRelation($relation, null);
        }

        return $models;
    }

    /**
     * Match the eagerly loaded results to their parents.
     *
     * @param array      $models
     * @param Collection $results
     * @param string     $relation
     *
     * @return array
     */
    public function match(array $models, Collection $results, $relation)
    {
        return $models;
    }

    /**
     * Get the results of the relationship.
     *
     * @return mixed
     */
    public function getResults()
    {
        return $this->get();
    }

    /**
     * Execute the query as a "select" statement.
     *
     * @param array $columns
     *
     * @return Collection
     */
    public function get($columns = ['*'])
    {
        return new Collection();
        #return $this->related->newCollection([]);
    }
}

when I implemented this I got this error

public function meter_type()
	{
		if( $this->belongsTo('\App\Models\CRUD\MeterType', 'meter_type_id')->count() )
		{

			return $this->belongsTo('\App\Models\CRUD\MeterType', 'meter_type_id');
		
		}else{

			return new EmptyRelation();

		}
		
	}

Undefined property: Illuminate\Database\Eloquent\Collection::$meter_type_id (attribute)