       // Renders "foo"
       let template = Template(string: "{{object}}")!
       let data = ["object": Box(render)]
-      let rendering = template.render(Box(data))!
+      template.render(Box(data))!
     
     :param: string A string
     :param: contentType A content type

      // Renders "null is falsey."
      let template = Template(string: "null is {{#null}}truthy{{^}}falsey{{/}}.")!
      let data = ["null": NSNull()]
      let rendering = template.render(Box(data))!
    
    A Box wrapping NSNull is empty:
    

      // Renders "0 is falsey. 1 is truthy."
      let template = Template(string: "{{#numbers}}{{.}} is {{#.}}truthy{{^}}falsey{{/}}.{{/}}")!
      let data = ["numbers": [NSNumber(int: 0), NSNumber(int: 1)]]
      template.render(Box(data))!
    
    GRMustache makes sure NSNumber and Swift types Int, UInt, and Double have the
    same behavior: whatever the actual type of boxed numbers, your templates render
