217     Expected<StringRef> MaybeKey = parseKey(RemarkField);  in parseRemark()  local
218     if (!MaybeKey)  in parseRemark()
219       return MaybeKey.takeError();  in parseRemark()
220     StringRef KeyName = *MaybeKey;  in parseRemark()
330     Expected<StringRef> MaybeKey = parseKey(DLNode);  in parseDebugLoc()  local
331     if (!MaybeKey)  in parseDebugLoc()
332       return MaybeKey.takeError();  in parseDebugLoc()
333     StringRef KeyName = *MaybeKey;  in parseDebugLoc()
372     Expected<StringRef> MaybeKey = parseKey(ArgEntry);  in parseArg()  local
373     if (!MaybeKey)  in parseArg()
374       return MaybeKey.takeError();  in parseArg()
375     StringRef KeyName = *MaybeKey;  in parseArg()