character limit in laravel code example

Example 1: {{Str::limit laravel

{{Str::limit($category->name, 20)}}

if to end 
  
{{Str::limit($category->name, 20, $end='.......')}}
             
or
  
{{\Illuminate\Support\Str::limit($category->name, 20)}}

Example 2: laravel fixed character limit

Str::limit($string)