public Builder clearAssetGcsSource() {
      if (assetGcsSourceBuilder_ == null) {
        if (sourceFormCase_ == 1) {
          sourceFormCase_ = 0;
          sourceForm_ = null;
          onChanged();
        }
      } else {
        if (sourceFormCase_ == 1) {
          sourceFormCase_ = 0;
          sourceForm_ = null;
        }
        assetGcsSourceBuilder_.clear();
      }
      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