@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
if (in.readBoolean()) {
hostname = in.readUTF();
<BUG>}
ImmutableMap.Builder<String, String> builder = ImmutableMap.builder();</BUG>
int size = in.readVInt();
for (int i = 0; i < size; i++) {
builder.put(in.readUTF(), in.readUTF());

@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
if (in.readBoolean()) {
hostname = in.readUTF();
}
if (in.readBoolean()) {
ImmutableMap.Builder<String, String> builder = ImmutableMap.builder();
int size = in.readVInt();
for (int i = 0; i < size; i++) {
builder.put(in.readUTF(), in.readUTF());
