@java.lang.Override
      public Builder clear() {
        super.clear();
        bitField0_ = 0;
        time_ = null;
        if (timeBuilder_ != null) {
          timeBuilder_.dispose();
          timeBuilder_ = null;
        }
        if (annotationBuilder_ != null) {
          annotationBuilder_.clear();
        }
        if (messageEventBuilder_ != null) {
          messageEventBuilder_.clear();
        }
        valueCase_ = 0;
        value_ = null;
        return this;
      }
<pre>
A time-stamped annotation or message event in the Span.
</pre>

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