public static function save_enabled_betas() {
		if ( ! wp_verify_nonce( $_POST['pum_save_betas_nonce'], 'pum_save_betas_nonce' ) ) {
			return;
		}

		if ( ! current_user_can( 'manage_options' ) ) {
			return;
		}

		if ( ! empty( $_POST['enabled_betas'] ) ) {
			$enabled_betas = array_filter(
				array_map(
					array(
						__CLASS__,
						'enabled_betas_sanitize_value',
					),
					$_POST['enabled_betas']
				)
			);
			PUM_Utils_Options::update( 'enabled_betas', $enabled_betas );
		} else {
			PUM_Utils_Options::delete( 'enabled_betas' );
		}
	}