check if specific Http Exception property exists - Laravel 5.5

Below is the data I get when I do Abort(400).

HttpException {#2704 ▼
  -statusCode: 400
  -headers: []
  #message: ""
  #code: 0
  #file: "C:\Users\murli\laravel\alawooz-qm\vendor\laravel\framework\src\Illuminate\Foundation\Application.php"
  #line: 940
  trace: {▶}
}

with different errors: 404, 401, 403, 500,... I get different properties.

I would like to check if a specific property exists.

for example: $e->getMethod() or $e->getRequestUri(),...

something like: if(isset($e->getMethod())) but it does not seem to work. I tried to use property_exists() and method_exists() as well.

via Chebli Mohamed