1629         Decl *AssociatedDecl, unsigned Index, std::optional<unsigned> PackIndex,
1785                                     std::optional<unsigned> PackIndex);
1988       std::optional<unsigned> PackIndex;  in TransformTemplateName()  local
2001         PackIndex = getPackIndex(Arg);  in TransformTemplateName()
2011           Template, AssociatedDecl, TTP->getIndex(), PackIndex);  in TransformTemplateName()
2072   std::optional<unsigned> PackIndex;  in TransformTemplateParmRefExpr()  local
2095     PackIndex = getPackIndex(Arg);  in TransformTemplateParmRefExpr()
2100                                          Arg, PackIndex);  in TransformTemplateParmRefExpr()
2171     std::optional<unsigned> PackIndex) {  in transformNonTypeTemplateParmRef()  argument
2240       AssociatedDecl, parm->getIndex(), PackIndex, refParam);  in transformNonTypeTemplateParmRef()
2430     Decl *AssociatedDecl, unsigned Index, std::optional<unsigned> PackIndex,  in BuildSubstTemplateTypeParmType()  argument
2450       Replacement, AssociatedDecl, Index, PackIndex);  in BuildSubstTemplateTypeParmType()
2496     std::optional<unsigned> PackIndex;  in TransformTemplateTypeParmType()  local
2514       PackIndex = getPackIndex(Arg);  in TransformTemplateTypeParmType()
2523                                           PackIndex, Arg, TL.getNameLoc());  in TransformTemplateTypeParmType()