2920     std::optional<ArrayRef<QualType>> ObjCSubsts = std::nullopt);
2925     std::optional<ArrayRef<QualType>> ObjCSubsts = std::nullopt) {  in FormatFunctionParameter()  argument
2945     if (ObjCSubsts)  in FormatFunctionParameter()
2946       Type = Type.substObjCTypeArgs(Param->getASTContext(), *ObjCSubsts,  in FormatFunctionParameter()
3004                                 ObjCSubsts);  in FormatFunctionParameter()
3020                        std::optional<ArrayRef<QualType>> ObjCSubsts) {  in formatBlockPlaceholder()  argument
3023   if (ObjCSubsts)  in formatBlockPlaceholder()
3025         ResultType.substObjCTypeArgs(BlockDecl->getASTContext(), *ObjCSubsts,  in formatBlockPlaceholder()
3044                                         /*SuppressBlock=*/true, ObjCSubsts);  in formatBlockPlaceholder()
3704       std::optional<ArrayRef<QualType>> ObjCSubsts;  in createCodeCompletionStringForDecl()  local
3706         ObjCSubsts = CCContext.getBaseType()->getObjCSubstitutions(Method);  in createCodeCompletionStringForDecl()
3710                                       /*SuppressBlock=*/false, ObjCSubsts);  in createCodeCompletionStringForDecl()
3712         if (ObjCSubsts)  in createCodeCompletionStringForDecl()
3714               Ctx, *ObjCSubsts, ObjCSubstitutionContext::Parameter);  in createCodeCompletionStringForDecl()