@java.lang.Override
  public java.lang.String getHistogramQuery() {
    java.lang.Object ref = histogramQuery_;
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
    } else {
      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
      java.lang.String s = bs.toStringUtf8();
      histogramQuery_ = s;
      return s;
    }
  }
<pre>
Requested histogram expression.
</pre>

<code>string histogram_query = 1;</code>

@return The histogramQuery.
java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/HistogramQueryResult.java