diff --git a/src/wp-includes/class-walker-category.php b/src/wp-includes/class-walker-category.php
index 01b7264..633ea33 100644
a
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b
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class Walker_Category extends Walker { |
57 | 57 | return; |
58 | 58 | |
59 | 59 | $indent = str_repeat("\t", $depth); |
60 | | $output .= "$indent<ul class='children'>\n"; |
| 60 | |
| 61 | // Default CSS class. |
| 62 | $classes = array( 'children' ); |
| 63 | |
| 64 | /** |
| 65 | * Filters the CSS class(es) applied to a category children list element. |
| 66 | * |
| 67 | * @since 4.8.0 |
| 68 | * |
| 69 | * @param array $classes The CSS classes that are applied to the menu `<ul>` element. |
| 70 | * @param array $args Array of optional arguments. See wp_list_categories(). |
| 71 | * @param int $depth Depth of category. Used for tab indentation. Default 0. |
| 72 | */ |
| 73 | $class_names = join( ' ', apply_filters( 'category_children_list_css_class', $classes, $args, $depth ) ); |
| 74 | $class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : ''; |
| 75 | |
| 76 | $output .= "$indent<ul $class_names>\n"; |
61 | 77 | } |
62 | 78 | |
63 | 79 | /** |