@java.lang.Override
    @java.lang.Deprecated
    public double getVectorDistanceThreshold() {
      return vectorDistanceThreshold_;
    }
<pre>
Optional. Only return results with vector distance smaller than the
threshold.
</pre>

<code>
optional double vector_distance_threshold = 3 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
</code>

@deprecated google.cloud.vertexai.v1.VertexRagStore.vector_distance_threshold is deprecated.
    See google/cloud/vertexai/v1/tool.proto;l=255
@return The vectorDistanceThreshold.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/VertexRagStore.java