public Builder clearDynamicRetrievalConfig() {
      bitField0_ = (bitField0_ & ~0x00000001);
      dynamicRetrievalConfig_ = null;
      if (dynamicRetrievalConfigBuilder_ != null) {
        dynamicRetrievalConfigBuilder_.dispose();
        dynamicRetrievalConfigBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
Specifies the dynamic retrieval configuration for the given source.
</pre>

<code>.google.cloud.vertexai.v1.DynamicRetrievalConfig dynamic_retrieval_config = 2;</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/GoogleSearchRetrieval.java