protected internal override List<FilePath> OnGetItemFiles (bool includeReferencedFiles)
{
List<FilePath> col = base.OnGetItemFiles (includeReferencedFiles);
if (includeReferencedFiles) {
foreach (ProjectFile pf in Files) {
if (pf.Subtype != Subtype.Directory)
col.Add (pf.FilePath);
}
}
return col;
}