@java.lang.Override
      public boolean hasDescription() {
        return ((bitField0_ & 0x00000001) != 0);
      }
<pre>
A user-supplied message describing the event. The maximum length for
the description is 256 bytes.
</pre>

<code>.google.devtools.cloudtrace.v2.TruncatableString description = 1;</code>

@return Whether the description field is set.
java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/Span.java