2927     std::optional<ArrayRef<QualType>> ObjCSubsts = std::nullopt);
2932     std::optional<ArrayRef<QualType>> ObjCSubsts = std::nullopt) {  in FormatFunctionParameter()  argument
2952     if (ObjCSubsts)  in FormatFunctionParameter()
2953       Type = Type.substObjCTypeArgs(Param->getASTContext(), *ObjCSubsts,  in FormatFunctionParameter()
3011                                 ObjCSubsts);  in FormatFunctionParameter()
3027                        std::optional<ArrayRef<QualType>> ObjCSubsts) {  in formatBlockPlaceholder()  argument
3030   if (ObjCSubsts)  in formatBlockPlaceholder()
3032         ResultType.substObjCTypeArgs(BlockDecl->getASTContext(), *ObjCSubsts,  in formatBlockPlaceholder()
3051                                         /*SuppressBlock=*/true, ObjCSubsts);  in formatBlockPlaceholder()
3710       std::optional<ArrayRef<QualType>> ObjCSubsts;  in createCodeCompletionStringForDecl()  local
3712         ObjCSubsts = CCContext.getBaseType()->getObjCSubstitutions(Method);  in createCodeCompletionStringForDecl()
3716                                       /*SuppressBlock=*/false, ObjCSubsts);  in createCodeCompletionStringForDecl()
3718         if (ObjCSubsts)  in createCodeCompletionStringForDecl()
3720               Ctx, *ObjCSubsts, ObjCSubstitutionContext::Parameter);  in createCodeCompletionStringForDecl()