public Builder clearTextQuery() {
      if (queryCase_ == 3) {
        queryCase_ = 0;
        query_ = null;
        onChanged();
      }
      return this;
    }
<pre>
A text-only query.
</pre>

<code>string text_query = 3;</code>

@return This builder for chaining.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/SearchIndexEndpointRequest.java