NAnt.MSBuild.MSBuildProject.VerifyProjectXml C# (CSharp) Method

        protected override void VerifyProjectXml(System.Xml.XmlElement docElement)
        {
            if(!IsMSBuildProject(docElement)) {
                throw new BuildException(string.Format(CultureInfo.InvariantCulture,
                    "Project '{0}' is not a valid MSBUILD project.", ProjectPath),
                    Location.UnknownLocation);
            }
        }