code: function Suite(title, parentContext, isRoot) {
    if (!utils.isString(title)) {
      throw createInvalidArgumentTypeError(
        'Suite argument "title" must be a string. Received type "' +
          typeof title +
          '"',
        'title',
        'string'
      );
    }
    this.title = title;
    function Context() {}
    Context.prototype = parentContext;
    this.ctx = new Context();
    this.suites = [];
    this.tests = [];
    this.pending = false;
    this._beforeEach = [];
    this._beforeAll = [];
    this._afterEach = [];
    this._afterAll = [];
    this.root = isRoot === true;
    this._timeout = 2000;
    this._enableTimeouts = true;
    this._slow = 75;
    this._bail = false;
    this._retries = -1;
    this._onlyTests = [];
    this._onlySuites = [];
    this.delayed = false;
  
    this.on('newListener', function(event) {
      if (deprecatedEvents[event]) {
        utils.deprecate(
          'Event "' +
            event +
            '" is deprecated.  Please let the Mocha team know about your use case: https://git.io/v6Lwm'
        );
      }
    });
  }
docs: Constructs a new `Suite` instance with the given `title`, `ctx`, and `isRoot`.
  
  @public
  @class
  @extends EventEmitter
  @see {@link https://nodejs.org/api/events.html#events_class_eventemitter|EventEmitter}
  @param {string} title - Suite title.
  @param {Context} parentContext - Parent context instance.
  @param {boolean} [isRoot=false] - Whether this is the root suite.