@java.lang.Deprecated
    public Builder clearSimilarityTopK() {
      bitField0_ = (bitField0_ & ~0x00000002);
      similarityTopK_ = 0;
      onChanged();
      return this;
    }
<pre>
Optional. Number of top k results to return from the selected corpora.
</pre>

<code>
optional int32 similarity_top_k = 2 [deprecated = true, (.google.api.field_behavior) = OPTIONAL];
</code>

@deprecated google.cloud.vertexai.v1.VertexRagStore.similarity_top_k is deprecated. See
    google/cloud/vertexai/v1/tool.proto;l=250
@return This builder for chaining.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/VertexRagStore.java