public static com.google.devtools.cloudtrace.v1.GetTraceRequest parseFrom(
      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data, extensionRegistry);
  }
<pre>
Required. ID of the trace to return.
</pre>

<code>string trace_id = 2 [(.google.api.field_behavior) = REQUIRED];</code>

@return The bytes for traceId.
java-trace/proto-google-cloud-trace-v1/src/main/java/com/google/devtools/cloudtrace/v1/GetTraceRequest.java