How to Fix Google Protobuf GeneratedMessageV3.isStringEmpty Symbol Not Found!

error: cannot find symbol

if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(appId_))

{

^ symbol: method isStringEmpty(Object) location: class GeneratedMessageV3

How to fix it? Details on the video.

Details can be found here.

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UDP server client in c

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My favourite writer Humayun Ahmed

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