argument(0)->type('digit')->required()->value(); $additionalConstraints = $this->argument(1)->type('closure')->value(); $this->arguments[0] = null; $this->arguments[1] = $height; $this->arguments[2] = function ($constraint) use ($additionalConstraints) { $constraint->aspectRatio(); if(is_callable($additionalConstraints)) $additionalConstraints($constraint); }; return parent::execute($image); } }