code: public ConsulResponse<CatalogNode> getNode(final String node,
                                                 final RequestOptions requestOptions) {
          return getNode(node, null, null, requestOptions);
      }
docs: Retrieves a single node with {@link io.advantageous.consul.domain.option.RequestOptions}.
  <p>
  GET /v1/catalog/node/{node}
  
  @param node           node
  @param requestOptions The Query Options to use.
  @return A list of matching {@link io.advantageous.consul.domain.CatalogService} objects.