lib/wda/utils.js
function getAdditionalRunContent (platformName, wdaRemotePort) {
  const runner = `WebDriverAgentRunner${isTvOS(platformName) ? '_tvOS' : ''}`;

  return {
    [runner]: {
      EnvironmentVariables: {
        USE_PORT: wdaRemotePort
      }
    }
  };
}
function getAdditionalRunContent (platformName, wdaRemotePort) {
  const runner = `WebDriverAgentRunner${isTvOS(platformName) ? '_tvOS' : ''}`;

  return {
    [runner]: {
      EnvironmentVariables: {
        USE_PORT: wdaRemotePort
      }
    }
  };
}
Return the WDA object which appends existing xctest runner content
@param {string} platformName - The name of the platform
@param {string} version - The Xcode SDK version of OS.
@return {object} returns a runner object which has USE_PORT