private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.visionai.v1.Asset,
            com.google.cloud.visionai.v1.Asset.Builder,
            com.google.cloud.visionai.v1.AssetOrBuilder>
        getAssetFieldBuilder() {
      if (assetBuilder_ == null) {
        assetBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.visionai.v1.Asset,
                com.google.cloud.visionai.v1.Asset.Builder,
                com.google.cloud.visionai.v1.AssetOrBuilder>(
                getAsset(), getParentForChildren(), isClean());
        asset_ = null;
      }
      return assetBuilder_;
    }
<pre>
Required. The asset to create.
</pre>

<code>.google.cloud.visionai.v1.Asset asset = 2 [(.google.api.field_behavior) = REQUIRED];
</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CreateAssetRequest.java