1*c8d645caSAndroid Build Coastguard Workersyntax = "proto2"; 2*c8d645caSAndroid Build Coastguard Worker 3*c8d645caSAndroid Build Coastguard Workermessage BaseMessage { 4*c8d645caSAndroid Build Coastguard Worker extensions 100 to 200; 5*c8d645caSAndroid Build Coastguard Worker} 6*c8d645caSAndroid Build Coastguard Worker 7*c8d645caSAndroid Build Coastguard Workerextend BaseMessage { 8*c8d645caSAndroid Build Coastguard Worker optional string string_extension = 100; 9*c8d645caSAndroid Build Coastguard Worker} 10*c8d645caSAndroid Build Coastguard Worker 11*c8d645caSAndroid Build Coastguard Worker 12