@java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      webSearchQueries_ = com.google.protobuf.LazyStringArrayList.emptyList();
      searchEntryPoint_ = null;
      if (searchEntryPointBuilder_ != null) {
        searchEntryPointBuilder_.dispose();
        searchEntryPointBuilder_ = null;
      }
      if (groundingChunksBuilder_ == null) {
        groundingChunks_ = java.util.Collections.emptyList();
      } else {
        groundingChunks_ = null;
        groundingChunksBuilder_.clear();
      }
      bitField0_ = (bitField0_ & ~0x00000004);
      if (groundingSupportsBuilder_ == null) {
        groundingSupports_ = java.util.Collections.emptyList();
      } else {
        groundingSupports_ = null;
        groundingSupportsBuilder_.clear();
      }
      bitField0_ = (bitField0_ & ~0x00000008);
      retrievalMetadata_ = null;
      if (retrievalMetadataBuilder_ != null) {
        retrievalMetadataBuilder_.dispose();
        retrievalMetadataBuilder_ = null;
      }
      return this;
    }
<pre>
Metadata returned to client when grounding is enabled.
</pre>

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