@java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      if (ragResourcesBuilder_ == null) {
        ragResources_ = java.util.Collections.emptyList();
      } else {
        ragResources_ = null;
        ragResourcesBuilder_.clear();
      }
      bitField0_ = (bitField0_ & ~0x00000001);
      similarityTopK_ = 0;
      vectorDistanceThreshold_ = 0D;
      ragRetrievalConfig_ = null;
      if (ragRetrievalConfigBuilder_ != null) {
        ragRetrievalConfigBuilder_.dispose();
        ragRetrievalConfigBuilder_ = null;
      }
      return this;
    }
<pre>
Retrieve from Vertex RAG Store for grounding.
</pre>

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