public Builder clearNextPageToken() {
      nextPageToken_ = getDefaultInstance().getNextPageToken();
      bitField0_ = (bitField0_ & ~0x00000002);
      onChanged();
      return this;
    }
<pre>
If defined, indicates that there are more traces that match the request
and that this value should be passed to the next request to continue
retrieving additional traces.
</pre>

<code>string next_page_token = 2;</code>

@return This builder for chaining.
java-trace/proto-google-cloud-trace-v1/src/main/java/com/google/devtools/cloudtrace/v1/ListTracesResponse.java