}

    def addSourceFile(File it) {
        def sources = xml.ItemGroup.find({ it.'@Label' == 'Sources' }) as Node
        sources.appendNode("ClCompile", [Include: toPath(it)])
    }

    def addResource(File it) {
        def resources = xml.ItemGroup.find({ it.'@Label' == 'References' }) as Node
        resources.appendNode("ResourceCompile", [Include: toPath(it)])

    }

    protected String getDefaultResourceName() {
        'default.vcxproj.filters'
    }

    def addSource(File sourceFile) {
        sources.appendNode("ClCompile", [Include: toPath(sourceFile)]).appendNode('Filter', 'Source Files')
    }

    def addHeader(File headerFile) {
        headers.appendNode("ClInclude", [Include: toPath(headerFile)]).appendNode('Filter', 'Header Files')

    }

    String getWindowsTargetPlatformVersion() {
        return globals.WindowsTargetPlatformVersion[0].text()
    }

    List<String> getSourceFiles() {
        def sources = itemGroup('Sources').ClCompile
        return normalise(sources*.'@Include')
    }

    List<String> getResourceFiles() {
        def sources = itemGroup('References').ResourceCompile
        return normalise(sources*.'@Include')
    }

        assert headerFile(0) == "headerOne"
        assert headerFile(1) == "headerTwo"
    }

    private String sourceFile(int index) {
        def source = itemGroup('Sources').ClCompile[index]
        assert source.Filter[0].text() == 'Source Files'
        return source.'@Include'
    }

    private String headerFile(int index) {
        def header = itemGroup('Headers').ClInclude[index]