code: public java.util.List<String> getLayers() {
          if (layers == null) {
              layers = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return layers;
      }
docs: <p>
  A list of <a href="https://docs.aws.amazon.com/lambda/latest/dg/configuration-layers.html">function layers</a> to
  add to the function's execution environment. Specify each layer by its ARN, including the version.
  </p>
  
  @return A list of <a href="https://docs.aws.amazon.com/lambda/latest/dg/configuration-layers.html">function
  layers</a> to add to the function's execution environment. Specify each layer by its ARN, including the
  version.