code: public function outputJson(
  		int $depth = 512,
  		int $options = 0
  	) {
  		$json = json_decode(
  			$this->output(),
  			false,
  			$depth,
  			$options
  		);
  		if(is_null($json)) {
  			$errorMessage = json_last_error_msg();
  			throw new JsonDecodeException($errorMessage);
  		}
  
  		return $json;
  	}
docs: Return json-decoded output from last exec call
  @throws JsonDecodeException