public Builder setAssetGcsSource(
        com.google.cloud.visionai.v1.AssetSource.AssetGcsSource.Builder builderForValue) {
      if (assetGcsSourceBuilder_ == null) {
        sourceForm_ = builderForValue.build();
        onChanged();
      } else {
        assetGcsSourceBuilder_.setMessage(builderForValue.build());
      }
      sourceFormCase_ = 1;
      return this;
    }
<pre>
The source of the asset is from Cloud Storage.
</pre>

<code>.google.cloud.visionai.v1.AssetSource.AssetGcsSource asset_gcs_source = 1;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/AssetSource.java