Remove a link from the WordPress admin bar menu

/**
 * Removes the "New" link from the Toolbar for all users except administrators.
 *
 * @see https://wpcodebook.com/wordpress-admin-bar-remove-link/
 * @see https://developer.wordpress.org/reference/hooks/admin_bar_menu/
 * @see https://developer.wordpress.org/reference/classes/wp_admin_bar/remove_node/
 * @see https://developer.wordpress.org/reference/classes/wp_admin_bar/get_node/
 * @see https://developer.wordpress.org/reference/functions/wp_get_current_user/
 */
add_action( 'admin_bar_menu', function ( $wp_admin_bar ) {
	if (
		! in_array( 'administrator', (array) wp_get_current_user()->roles ) &&
		$wp_admin_bar->get_node( 'new-content' )
	) {
		$wp_admin_bar->remove_node( 'new-content' );
	}
}, PHP_INT_MAX );