private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vision.v1p2beta1.GcsSource,
            com.google.cloud.vision.v1p2beta1.GcsSource.Builder,
            com.google.cloud.vision.v1p2beta1.GcsSourceOrBuilder>
        getGcsSourceFieldBuilder() {
      if (gcsSourceBuilder_ == null) {
        gcsSourceBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vision.v1p2beta1.GcsSource,
                com.google.cloud.vision.v1p2beta1.GcsSource.Builder,
                com.google.cloud.vision.v1p2beta1.GcsSourceOrBuilder>(
                getGcsSource(), getParentForChildren(), isClean());
        gcsSource_ = null;
      }
      return gcsSourceBuilder_;
    }
<pre>
The Google Cloud Storage location to read the input from.
</pre>

<code>.google.cloud.vision.v1p2beta1.GcsSource gcs_source = 1;</code>
java-vision/proto-google-cloud-vision-v1p2beta1/src/main/java/com/google/cloud/vision/v1p2beta1/InputConfig.java