419   auto tryRead = [&Stream](char &Dest, size_t size) -> Error {  in ReadSignature()  local
428   if (Error Err = tryRead(Signature[0], 8))  in ReadSignature()
430   if (Error Err = tryRead(Signature[1], 8))  in ReadSignature()
435     if (Error Err = tryRead(Signature[2], 8))  in ReadSignature()
437     if (Error Err = tryRead(Signature[3], 8))  in ReadSignature()
442     if (Error Err = tryRead(Signature[2], 8))  in ReadSignature()
444     if (Error Err = tryRead(Signature[3], 8))  in ReadSignature()
449     if (Error Err = tryRead(Signature[2], 8))  in ReadSignature()
451     if (Error Err = tryRead(Signature[3], 8))  in ReadSignature()
456     if (Error Err = tryRead(Signature[2], 4))  in ReadSignature()
458     if (Error Err = tryRead(Signature[3], 4))  in ReadSignature()
460     if (Error Err = tryRead(Signature[4], 4))  in ReadSignature()
462     if (Error Err = tryRead(Signature[5], 4))  in ReadSignature()