/**
	 * Get default signing-key.gpg.
	 *
	 * @return  string|null
	 * @since   3.2.0
	 **/
	public function get(): ?string
	{
		// Build the request path.
		$path = "/signing-key.gpg";

		// Send the get request.
		return $this->response->get(
			$this->http->get(
				$this->uri->get($path)
			)
		);
	}