private com.google.protobuf.SingleFieldBuilderV3<
              com.google.cloud.vertexai.api.GcsSource,
              com.google.cloud.vertexai.api.GcsSource.Builder,
              com.google.cloud.vertexai.api.GcsSourceOrBuilder>
          getGcsSourceFieldBuilder() {
        if (gcsSourceBuilder_ == null) {
          gcsSourceBuilder_ =
              new com.google.protobuf.SingleFieldBuilderV3<
                  com.google.cloud.vertexai.api.GcsSource,
                  com.google.cloud.vertexai.api.GcsSource.Builder,
                  com.google.cloud.vertexai.api.GcsSourceOrBuilder>(
                  getGcsSource(), getParentForChildren(), isClean());
          gcsSource_ = null;
        }
        return gcsSourceBuilder_;
      }
<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