ProtobufSystemInfo.java file not fund

i have download sonarqube version is 7.0,but compile is error ,error detail is file “org.sonar.process.systeminfo.protobuf.ProtobufSystemInfo” is not fund.

i download other version 6.7.6、7.6, but not fund this file “org.sonar.process.systeminfo.protobuf.ProtobufSystemInfo”.

I look at the corresponding jar package. The file “org.sonar.process.systeminfo.protobuf.ProtobufSystemInfo” exists. Is this a bug? How can I get this file?