@java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      topK_ = 0;
      filter_ = null;
      if (filterBuilder_ != null) {
        filterBuilder_.dispose();
        filterBuilder_ = null;
      }
      ranking_ = null;
      if (rankingBuilder_ != null) {
        rankingBuilder_.dispose();
        rankingBuilder_ = null;
      }
      return this;
    }
<pre>
Specifies the context retrieval config.
</pre>

Protobuf type {@code google.cloud.vertexai.v1.RagRetrievalConfig}
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/RagRetrievalConfig.java