name = $name == "" ? null : $name; } public function has_name() : bool { return $this->name != null; } public function get_name() : string { return $this->name != null ? $this->name : "null"; } //Set and get the number of responses public function set_responses(int $responses){ $this->responses = $responses; } public function has_responses() : bool { return $this->responses > 0; } public function get_responses() : int { return $this->responses; } }