Add custom post type support for WPB accordion menu and category post

functions.php

<?php

add_filter( 'wpb_wmca_category_css_class', 'wpb_wmca_add_support_single_doc', 10, 4 );
function wpb_wmca_add_support_single_doc($css_classes, $category, $depth, $args){

	if( is_singular( 'docs' ) ){
        if ( ! empty( $args['current_category'] ) ) {
            if ( $args['current_category'] === $category->term_id ) {
                $css_classes[] = 'current-cat';
            }
        }

        if ( $args['has_children'] && $args['hierarchical'] && ( empty( $args['max_depth'] ) || $args['max_depth'] > $depth + 1 ) ) {
            //$css_classes[] = 'current-cat';
        }

        if ( $args['current_category_ancestors'] && $args['current_category'] && in_array( $category->term_id, $args['current_category_ancestors'], true ) ) {
            $css_classes[] = 'wpb-wmca-current-cat-parent';
        }
    }
	return $css_classes;
}