public function get_continent_code_for_country( $cc ) {
		$cc                 = trim( strtoupper( $cc ) );
		$continents         = $this->get_continents();
		$continents_and_ccs = wp_list_pluck( $continents, 'countries' );
		foreach ( $continents_and_ccs as $continent_code => $countries ) {
			if ( false !== array_search( $cc, $countries, true ) ) {
				return $continent_code;
			}
		}

		return '';
	}