@java.lang.Override
  @SuppressWarnings({"unused"})
  protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
    return new AttributeValue();
  }
<pre>
The allowed types for `[VALUE]` in a `[KEY]:[VALUE]` attribute.
</pre>

Protobuf type {@code google.devtools.cloudtrace.v2.AttributeValue}
java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/AttributeValue.java