Where to place a svg chevron down in my custom walker?

i am a bit stuck with the custom walker in my WordPress theme. I wanted to place a svg chevron down on the first link when a submenu is detected. My theme uses a svg file with all the svg paths. The svg i have to insert is specified by ffe18_get_svg( array(‘icon’ => ‘chevron-down’) ) but i don’t know where to place it. I guess there is a specific place where it will only be activated when it has a submenu. This is my custom walker :

class ffe18_Walker_Nav_Menu extends Walker_Nav_Menu {

/**
* Starts the list before the elements are added.
*
* Adds classes to the unordered list sub-menus.
*
* @param string $output Passed by reference. Used to append additional content.
* @param int $depth Depth of menu item. Used for padding.
* @param array $args An array of arguments. @see wp_nav_menu()
*/
function start_lvl( &$output, $depth = 0, $args = array() ) {
// Depth-dependent classes.
$indent = ( $depth > 0 ? str_repeat( “t”, $depth ) : ” ); // code indent
$display_depth = ( $depth + 1); // because it counts the first submenu as 0
$classes = array(
‘sub-menu’,
( $display_depth % 2 ? ‘menu-odd’ : ‘menu-even’ ),
( $display_depth >=2 ? ‘sub-sub-menu’ : ” ),
‘menu-depth-‘ . $display_depth
);
$class_names = implode( ‘ ‘, $classes );

// Build HTML for output.
$output .= “n” . $indent . ‘<ul class=”‘ . $class_names . ‘”>’ . “n”;
}

/**
* Start the element output.
*
* Adds main/sub-classes to the list items and links.
*
* @param string $output Passed by reference. Used to append additional content.
* @param object $item Menu item data object.
* @param int $depth Depth of menu item. Used for padding.
* @param array $args An array of arguments. @see wp_nav_menu()
* @param int $id Current item ID.
*/
function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
global $wp_query;
$indent = ( $depth > 0 ? str_repeat( “t”, $depth ) : ” ); // code indent

// Depth-dependent classes.
$depth_classes = array(
( $depth == 0 ? ‘main-menu-item’ : ‘sub-menu-item’ ),
( $depth >=2 ? ‘sub-sub-menu-item’ : ” ),
( $depth % 2 ? ‘menu-item-odd’ : ‘menu-item-even’ ),
‘menu-item-depth-‘ . $depth
);
$depth_class_names = esc_attr( implode( ‘ ‘, $depth_classes ) );

// Passed classes.
$classes = empty( $item->classes ) ? array() : (array) $item->classes;
$class_names = esc_attr( implode( ‘ ‘, apply_filters( ‘nav_menu_css_class’, array_filter( $classes ), $item ) ) );

// Build HTML.
$output .= $indent . ‘<li id=”nav-menu-item-‘. $item->ID . ‘” class=”‘ . $depth_class_names . ‘ ‘ . $class_names . ‘”>’;

// Link attributes.
$attributes = ! empty( $item->attr_title ) ? ‘ title=”‘ . esc_attr( $item->attr_title ) .'”‘ : ”;
$attributes .= ! empty( $item->target ) ? ‘ target=”‘ . esc_attr( $item->target ) .'”‘ : ”;
$attributes .= ! empty( $item->xfn ) ? ‘ rel=”‘ . esc_attr( $item->xfn ) .'”‘ : ”;
$attributes .= ! empty( $item->url ) ? ‘ href=”‘ . esc_attr( $item->url ) .'”‘ : ”;
$attributes .= ‘ class=”menu-link ‘ . ( $depth > 0 ? ‘sub-menu-link’ : ‘main-menu-link’ ) . ‘”‘;

// Build HTML output and pass through the proper filter.
$item_output = sprintf( ‘%1$s<a%2$s>%3$s%4$s%5$s</a>%6$s’,
$args->before,
$attributes,
$args->link_before,
apply_filters( ‘the_title’, $item->title, $item->ID ),
$args->link_after,
$args->after
);
$output .= apply_filters( ‘walker_nav_menu_start_el’, $item_output, $item, $depth, $args );
}
}

Thanks for your help 😉

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