public Builder setGroup(Group value) {
            if (value == null) {
                throw new NullPointerException();
            }

            group_ = value.getNumber();
            onChanged();
            return this;
        }
<code>.com.alipay.sofa.rpc.server.bolt.pb.Group group = 2;</code>
test/test-integration/src/test/java/com/alipay/sofa/rpc/server/bolt/pb/EchoRequest.java