public com.google.cloud.vision.v1.GcsSource getGcsSource() {
      if (gcsSourceBuilder_ == null) {
        return gcsSource_ == null
            ? com.google.cloud.vision.v1.GcsSource.getDefaultInstance()
            : gcsSource_;
      } else {
        return gcsSourceBuilder_.getMessage();
      }
    }
<pre>
The Google Cloud Storage location to read the input from.
</pre>

<code>.google.cloud.vision.v1.GcsSource gcs_source = 1;</code>

@return The gcsSource.
java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/InputConfig.java