public function getFields()
    {
        $fields = FieldList::create($this->fields);
        
        foreach ($fields as $field) {
            
            $fields->insertAfter(
                $field->getName(),
                LiteralField::create(
                    sprintf('%s_ByLiteral', $field->getName()),
                    '<div class="by"><span class="icon"></span></div>'
                )
            );
            
        }
        
        return $fields;
    }