code: function(opts) {
    this.load_balancer = opts.load_balancer;
    this.task_manager  = opts.task_manager;
    this.file_manager  = opts.file_manager;
    this.net_manager   = opts.net_manager;
    this.port          = opts.port || 10000;
    this.tls           = opts.tls;
  }
docs: Set API default values
  @constructor
  @this {API}
  @param opts {object} options
  @param opts.port Port to listen on
  @param opts.task_manager Task manager object
  @param opts.file_manager File manager object
  @param opts.file_manager Network manager (cloudfunctions.js) object
  @param opts.tls TLS keys