@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    for (int i = 0; i < traces_.size(); i++) {
      output.writeMessage(1, traces_.get(i));
    }
    getUnknownFields().writeTo(output);
  }
<pre>
List of traces.
</pre>

<code>repeated .google.devtools.cloudtrace.v1.Trace traces = 1;</code>
java-trace/proto-google-cloud-trace-v1/src/main/java/com/google/devtools/cloudtrace/v1/Traces.java