Document STD Library fileservices LogicalFileList param

If I open the std library “file.ecl” and look at the signature for LogicalFileList it shows 5 arguments

EXPORT dataset(FsLogicalFileInfoRecord) LogicalFileList(varstring namepattern='*', boolean includenormal=true, boolean includesuper=false, boolean unknownszero=false, varstring foreigndali='') :=
lib_fileservices.FileServices.LogicalFileList(namepattern, includenormal, includesuper, unknownszero, foreigndali);

But when I look in the DOCs, the “foreignDali” argument is not listed