public com.google.cloud.vertexai.api.GcsSourceOrBuilder getGcsSourceOrBuilder() {
        if (gcsSourceBuilder_ != null) {
          return gcsSourceBuilder_.getMessageOrBuilder();
        } else {
          return gcsSource_ == null
              ? com.google.cloud.vertexai.api.GcsSource.getDefaultInstance()
              : gcsSource_;
        }
      }
<pre>
The Cloud Storage location for the input instances.
</pre>

<code>.google.cloud.vertexai.v1.GcsSource gcs_source = 2;</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/Examples.java