Illuminate\Support\Collection::push PHP Method

    public function push($value)
    {
        $this->offsetSet(null, $value);
        return $this;
    }

 /**
  * Register the location.
  *
  * @return void
  */
 public function register()
 {
     if (empty($this->migrate)) {
         return false;
     }
     $this->locations->push([$this->migrate, $this->using ?: null]);
 }