VS 2013 telling me Use lambda expression

My issue comes with the layers.Add part. I'm brand new to MVC, Razor, Linq and Telerik's KendoUI using the Map widget. the layers.Add() function gets a green squiggly line with message "Use lambda expression". Why am I getting this? Thanks for your help. link here

@(Html.Kendo().Map()
      .Name("map")
      .Center(39.6924, -97.3370)
      .Zoom(4)
      .Layers(layers =>
      {
          layers.Add()
              .Style(style => style.Fill(fill => fill.Opacity(0.7)))
              .Type(MapLayerType.Shape)
              .DataSource(dataSource => dataSource
                  .GeoJson()
                  .Read(read => read.Url(Url.Content("~/Scripts/gz_2010_us_040_00_500k.js")))
              );
      })
      .Events(events => events
           .ShapeCreated("onShapeCreated")
           .ShapeMouseEnter("onShapeMouseEnter")
           .ShapeMouseLeave("onShapeMouseLeave")
        )
)

The IDE is simply suggesting that you could shorten your lambda. Suppose F is some function that returns void. Then both of the following are the same:

x => { F(x); }
x => F(x)

So your code could be shortened by replacing this:

layers =>
{
    layers.Add()
        .Style(style => style.Fill(fill => fill.Opacity(0.7)))
        .Type(MapLayerType.Shape)
        .DataSource(dataSource => dataSource
            .GeoJson()
            .Read(read => read.Url(Url.Content("~/Scripts/gz_2010_us_040_00_500k.js")))
        );
}

With this:

layers => layers.Add()
    .Style(style => style.Fill(fill => fill.Opacity(0.7)))
    .Type(MapLayerType.Shape)
    .DataSource(dataSource => dataSource
        .GeoJson()
        .Read(read => read.Url(Url.Content("~/Scripts/gz_2010_us_040_00_500k.js")))
     )

For legibility reasons you may or may not want to actually make this change.