private com.google.protobuf.SingleFieldBuilderV3<
            com.google.devtools.cloudtrace.v2.Span.TimeEvents,
            com.google.devtools.cloudtrace.v2.Span.TimeEvents.Builder,
            com.google.devtools.cloudtrace.v2.Span.TimeEventsOrBuilder>
        getTimeEventsFieldBuilder() {
      if (timeEventsBuilder_ == null) {
        timeEventsBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.devtools.cloudtrace.v2.Span.TimeEvents,
                com.google.devtools.cloudtrace.v2.Span.TimeEvents.Builder,
                com.google.devtools.cloudtrace.v2.Span.TimeEventsOrBuilder>(
                getTimeEvents(), getParentForChildren(), isClean());
        timeEvents_ = null;
      }
      return timeEventsBuilder_;
    }
<pre>
A set of time events. You can have up to 32 annotations and 128 message
events per span.
</pre>

<code>.google.devtools.cloudtrace.v2.Span.TimeEvents time_events = 9;</code>
java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/Span.java