def get_servers_labeled(labels)
      label_query = Array(labels).reject { |x| !x.include?(':') }.join(';')
      return [] unless label_query
      nr_api.get(url('servers'), 'filter[labels]' => label_query).body
    end
def get_servers_labeled(labels)
      label_query = Array(labels).reject { |x| !x.include?(':') }.join(';')
      return [] unless label_query
      nr_api.get(url('servers'), 'filter[labels]' => label_query).body
    end
=> List the Servers with a Label