public com.google.cloud.telcoautomation.v1alpha1.File.Builder addFilesBuilder(int index) {
      return getFilesFieldBuilder()
          .addBuilder(index, com.google.cloud.telcoautomation.v1alpha1.File.getDefaultInstance());
    }
<pre>
Optional. File contents of a hydrated deployment.
When invoking UpdateHydratedBlueprint API, only the modified files should
be included in this. Files that are not included in the update of a
hydrated deployment will not be changed.
</pre>

<code>
repeated .google.cloud.telcoautomation.v1alpha1.File files = 3 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-telcoautomation/proto-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/HydratedDeployment.java