constructor(opts) {
		super(opts);

		this.opts = _.defaultsDeep(this.opts, {
			/** @type {String} Base URL for Zipkin server. */
			eventName: "$tracing.spans",

			sendStartSpan: false,
			sendFinishSpan: true,

			broadcast: false,

			groups: null,

			/** @type {Number} Batch send time interval. */
			interval: 5,

			spanConverter: null,

			/** @type {Object?} Default span tags */
			defaultTags: null
		});

		this.queue = [];
	}
Creates an instance of EventTraceExporter.
@param {Object?} opts
@memberof EventTraceExporter