increment(name, labels, value = 1, timestamp) {
		if (!this.opts.enabled) return null;

		const item = this.getMetric(name);
		if (!isFunction(item.increment))
			throw new Error(
				"Invalid metric type. Incrementing works only with counter & gauge metric types."
			);

		return item.increment(labels, value, timestamp);
	}
Increment a metric value.

@param {String} name
@param {Object?} labels
@param {number} [value=1]
@param {Number?} timestamp
@returns
@memberof MetricRegistry