void RegisterExtenderProvider()
        {
            var    provider = new PropertyExtenderProvider(_dte, this);
            string name     = PropertyExtenderProvider.ExtenderName;

            RegisterExtenderProvider(VSConstants.CATID.CSharpFileProperties_string, name, provider);
            RegisterExtenderProvider(VSConstants.CATID.VBFileProperties_string, name, provider);
        }
 void RegisterExtenderProvider()
 {
     var provider = new PropertyExtenderProvider(_dte, this);
     string name = PropertyExtenderProvider.ExtenderName;
     RegisterExtenderProvider(VSConstants.CATID.CSharpFileProperties_string, name, provider);
     RegisterExtenderProvider(VSConstants.CATID.VBFileProperties_string, name, provider);
 }