public Builder mergeFrom(
            com.google.devtools.cloudtrace.v2.Span.TimeEvent.Annotation other) {
          if (other
              == com.google.devtools.cloudtrace.v2.Span.TimeEvent.Annotation.getDefaultInstance())
            return this;
          if (other.hasDescription()) {
            mergeDescription(other.getDescription());
          }
          if (other.hasAttributes()) {
            mergeAttributes(other.getAttributes());
          }
          this.mergeUnknownFields(other.getUnknownFields());
          onChanged();
          return this;
        }
<pre>
Text annotation with a set of attributes.
</pre>

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