anchor.diff:    <ItemGroup>
       <Compile Include="Test3.fs" />
     </ItemGroup>
  -    """
  -    + emptyItemGroup +
  -    """
  -    </Project>
  +  <ItemGroup />
  +</Project>
       """
   
   [<Test>]
  
positive.code: """
  
  let delExpected =
      let emptyItemGroup = if runningOnMono then "<ItemGroup></ItemGroup>" else "<ItemGroup />"
  
      """<?xml version="1.0" encoding="utf-8"?>
  <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
    <PropertyGroup>
  
negative.code: """
  
  let delMultipleIGExpected =
      """<?xml version="1.0" encoding="utf-8"?>
  <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
    <PropertyGroup>
  