docs: function httpRequestStableId (data) {
      // require data to be object
      data = requireValidOptionalObject(data)
      // build object with only the deterministic properties of module call data
      var stableData = _.pick(data, ['options', 'moduleCallSignature', 'requestId', 'stack'])
      // generate 128bit hex id of stable stringified data
      var stableIdWithData = stableId(stableData, true)
      // reture id string
      return stableIdWithData.id
  }