Wordpress Custom Taxonomy checklist for any custom post type

//
// Category Checklists
//

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.1
 */
class Walker_Category_Checklist extends Walker {
    var $tree_type = 'category';
    var $db_fields = array ('parent' => 'parent', 'id' => 'term_id'); //TODO: decouple this

    function start_lvl(&$output, $depth, $args) {
        $indent = str_repeat("\t", $depth);
        //$output .= "$indent<ul class='children'>\n";
                $output .= "$indent\n";
    }

    function end_lvl(&$output, $depth, $args) {
        $indent = str_repeat("\t", $depth);
        //$output .= "$indent</ul>\n";
                $output .= "$indent\n";
    }

    function start_el(&$output, $category, $depth, $args) {
        extract($args);
        if ( empty($taxonomy) )
            $taxonomy = 'category';

        if ( $taxonomy == 'category' )
            $name = 'post_category';
        else
                        $name = $taxonomy;
            //$name = 'tax_input['.$taxonomy.']';

        //$class = in_array( $category->term_id, $popular_cats ) ? ' class="popular-category"' : '';
        //$output .= "\n<li id='{$taxonomy}-{$category->term_id}'$class>" . '<label class="selectit"><input value="' . $category->term_id . '" type="checkbox" name="'.$name.'[]" id="in-'.$taxonomy.'-' . $category->term_id . '"' . checked( in_array( $category->term_id, $selected_cats ), true, false ) . disabled( empty( $args['disabled'] ), false, false ) . ' /> ' . esc_html( apply_filters('the_category', $category->name )) . '</label>';
                //$output .= "\n<li id='{$taxonomy}-{$category->term_id}'$class>" . '<label class="selectit"><input value="' . $category->term_id . '" type="checkbox" name="'.$name.'[]" id="in-'.$taxonomy.'-' . $category->term_id . '"' . checked( in_array( $category->term_id, $selected_cats ), true, false ) . disabled( empty( $args['disabled'] ), false, false ) . ' /> ' . esc_html( apply_filters('the_category', $category->name )) . '</label>';
                $output .= '<br/><label class="fullsize customcheckboxl" for="'.esc_html( apply_filters('the_category', $category->name )).$category->term_id.'"><input type="checkbox" id="'.esc_html( apply_filters('the_category', $category->name )).$category->term_id.'" class="customcheckbox" name="'.$name.'[]" '.checked( in_array( $category->term_id, $selected_cats ), true, false ).' value="'.$category->term_id.'" /> '.esc_html( apply_filters('the_category', $category->name )).'</label>';
                //'<label class="fullsize customcheckboxl" for="'.$language_list->cat_name.$language_list->cat_ID.'"><input type="checkbox" id="'.$language_list->cat_name.$language_list->cat_ID.'" class="customcheckbox" name="language[]" '.$check.' value="'.$language_list->cat_ID.'" /> '.$language_list->cat_name.'</label>';
    }

    function end_el(&$output, $category, $depth, $args) {
        //$output .= "</li>\n";
                $output .= "\n";
    }
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.1
 *
 * @param unknown_type $post_id
 * @param unknown_type $descendants_and_self
 * @param unknown_type $selected_cats
 * @param unknown_type $popular_cats
 */
function wp_category_checklist( $post_id = 0, $descendants_and_self = 0, $selected_cats = false, $popular_cats = false, $walker = null, $checked_ontop = true ) {
    wp_terms_checklist($post_id,
        array(
            'taxonomy' => 'category',
            'descendants_and_self' => $descendants_and_self,
            'selected_cats' => $selected_cats,
            'popular_cats' => $popular_cats,
            'walker' => $walker,
            'checked_ontop' => $checked_ontop
  ));
}

/**
 * Taxonomy independent version of wp_category_checklist
 *
 * @since 3.0.0
 *
 * @param int $post_id
 * @param array $args
 */
function wp_terms_checklist($post_id = 0, $args = array()) {
    $defaults = array(
        'descendants_and_self' => 0,
        'selected_cats' => false,
        'popular_cats' => false,
        'walker' => null,
        'taxonomy' => 'category',
        'checked_ontop' => false
    );
    extract( wp_parse_args($args, $defaults), EXTR_SKIP );

    if ( empty($walker) || !is_a($walker, 'Walker') )
        $walker = new Walker_Category_Checklist;

    $descendants_and_self = (int) $descendants_and_self;

    $args = array('taxonomy' => $taxonomy);

    $tax = get_taxonomy($taxonomy);
    $args['disabled'] = !current_user_can($tax->cap->assign_terms);

    if ( is_array( $selected_cats ) )
        $args['selected_cats'] = $selected_cats;
    elseif ( $post_id )
        $args['selected_cats'] = wp_get_object_terms($post_id, $taxonomy, array_merge($args, array('fields' => 'ids')));
    else
        $args['selected_cats'] = array();

    if ( is_array( $popular_cats ) )
        $args['popular_cats'] = $popular_cats;
    else
        $args['popular_cats'] = get_terms( $taxonomy, array( 'fields' => 'ids', 'orderby' => 'count', 'order' => 'DESC', 'number' => 10, 'hierarchical' => false ) );

    if ( $descendants_and_self ) {
        $categories = (array) get_terms($taxonomy, array( 'child_of' => $descendants_and_self, 'hierarchical' => 0, 'hide_empty' => 0 ) );
        $self = get_term( $descendants_and_self, $taxonomy );
        array_unshift( $categories, $self );
    } else {
        $categories = (array) get_terms($taxonomy, array('get' => 'all'));
    }

    if ( $checked_ontop ) {
        // Post process $categories rather than adding an exclude to the get_terms() query to keep the query the same across all posts (for any query cache)
        $checked_categories = array();
        $keys = array_keys( $categories );

        foreach( $keys as $k ) {
            if ( in_array( $categories[$k]->term_id, $args['selected_cats'] ) ) {
                $checked_categories[] = $categories[$k];
                unset( $categories[$k] );
            }
        }

        // Put checked cats on top
        echo call_user_func_array(array(&$walker, 'walk'), array($checked_categories, 0, $args));
    }
    // Then the rest of them
    echo call_user_func_array(array(&$walker, 'walk'), array($categories, 0, $args));
}

//usage
//here $jobid is post id
wp_terms_checklist($jobid, array( 'taxonomy' => 'childrenage') );