public Builder clearTraces() {
      if (tracesBuilder_ == null) {
        traces_ = java.util.Collections.emptyList();
        bitField0_ = (bitField0_ & ~0x00000001);
        onChanged();
      } else {
        tracesBuilder_.clear();
      }
      return this;
    }
<pre>
List of traces.
</pre>

<code>repeated .google.devtools.cloudtrace.v1.Trace traces = 1;</code>
java-trace/proto-google-cloud-trace-v1/src/main/java/com/google/devtools/cloudtrace/v1/Traces.java