private void ensureHistogramQueriesIsMutable() {
      if (!((bitField0_ & 0x00000020) != 0)) {
        histogramQueries_ =
            new java.util.ArrayList<com.google.cloud.talent.v4.HistogramQuery>(histogramQueries_);
        bitField0_ |= 0x00000020;
      }
    }
<pre>
Controls whether to broaden the search when it produces sparse results.
Broadened queries append results to the end of the matching results
list.

Defaults to false.
</pre>

<code>bool enable_broadening = 5;</code>

@return This builder for chaining.
java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/SearchJobsRequest.java