public Builder setMetadata(
        com.google.cloud.vertexai.api.ExplanationMetadataOverride.Builder builderForValue) {
      if (metadataBuilder_ == null) {
        metadata_ = builderForValue.build();
      } else {
        metadataBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }
<pre>
The metadata to be overridden. If not specified, no metadata is overridden.
</pre>

<code>.google.cloud.vertexai.v1.ExplanationMetadataOverride metadata = 2;</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/ExplanationSpecOverride.java